Casting Through Ancient Greece

Teaser: Dual Hegemony? (Patreon)

Mark Selleck

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What if the alliance that crushed Persia had become a lasting settlement? We revisit the brief window after Plataea and Mycale when Greece looked coordinated, and we test a bold idea: Athens commands the sea, Sparta secures the land, and both accept firm limits. From the outside it sounds elegant. Inside the machinery, doctrine, ideology, and economics pull the partnership apart.

We trace why Spartan warfare favored short, decisive campaigns tied to helot stability, while Athenian power thrived on long-haul naval pressure, trade protection, and cumulative influence across the Aegean. Those clashing tempos made joint strategy awkward: one side sought closure, the other needed continuity. Then we tackle freedom itself. Sparta equated liberty with order and control; Athens tied it to participation and autonomy at home and, increasingly, among allies abroad. Each city believed it defended Hellenic freedom, yet each defined it in ways the other found threatening, turning coordination into a contest of values.

Material realities widened the gap. The Piraeus, tribute, and fortified long walls made Athenian security inseparable from projection. Spartan strength remained agrarian and territorial, built for defense rather than maritime governance. Pausanias’s overreach hastened a shift: Sparta withdrew from Ionia as Athens organized the Delian League, converting emergency leadership into durable influence. Could institutions have rescued a dual hegemony—arbitration councils, command rotations, codified spheres? Perhaps in theory, but the polis world resisted supra-city authority, and neither side could reliably practice the self-restraint required.

Across strategy, culture, and political tempo, the same pattern emerges: wartime unity simplified choices; peacetime complexity revived incompatible logics. The result is a clear takeaway for students of ancient history and statecraft alike: alliances can win battles, but only institutions and shared definitions turn victory into order. If you found this exploration useful, follow the show, share it with a friend who loves Greek history, and leave a review with the single reform you think might have saved the partnership.

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SPEAKER_00:

Hello everyone and thank you for supporting the series here on Patreon, and welcome back to our next bonus episode. This one for February 2026, the Jewel Hegemony that never was. Where we'll be looking at could Athens and Sparta have ruled together? In 479 BC, the Greek world stood at a rare point of convergence. The wars that had threatened its destruction ended not in fragmentation, but in coordination. At Plataea, a coalition army, Spartan led on land, broke the backbone of Persian power in the mainland. At Makalay, almost simultaneously, an Allied fleet, dominated by Athens, destroyed what remained of Persian naval control in the Aegean. Together, these victories closed the Persian wars, not as a series of isolated triumphs, but as a unified strategic success. For one brief moment, Greece had fought, planned, and prevailed as a single system. That moment mattered precisely because it did not last. In the immediate aftermath of victory, Athens and Sparta occupied complementary positions of power. Sparta commanded unmatched authority in hoplite warfare, discipline, and land-based coalition leadership. Athens, possessing the fleet, the crews, and the maritime infrastructure, controlled the sea lanes, upon which post-war security now depended. Between them lay the foundation of a divided but potentially cooperative hegemony. Each held what the other lacked. Each had proven indispensable. The question that follows is not whether rivalry emerged, it clearly did, but whether an alternative arrangement was ever plausible. Was this alliance merely a temporary alignment of necessity, destined to collapse once external threats receded? Or did 479 BC present a missed geopolitical settlement? A chance for Athens and Sparta to lead together, stabilising the Greek world through a deliberate balance of land and sea power. This episode does not argue for an imagined federation, nor for a unified empire that Greece was never capable of sustaining. Instead, it examines the possibility of dual hegemony, a shared leadership in which Athens and Sparta, by restraint as much as by strength, govern security in different domains while acknowledging mutual limits. What follows is not speculative fiction. By examining doctrine, ideology, economy, and culture, we will see that while Athens and Sparta were aligned tactically against Persia, they were already diverging strategically. The alliance that won the war contained, from the moment of victory, the seeds of its own unraveling. To imagine Athens and Sparta ruling together is to think not in terms of empire, but of careful negotiated coexistence. Jewel hegemony in this context would have meant deliberate division of responsibilities. Sparta commanding land operations, protecting the Peloponnese, and central Greece while Athens assumed maritime leadership, securing the Aegean, Ionian cities and key trade routes. Each polis would exercise authority in its domain, with mutual restraint preventing either from overreaching into the other sphere. This arrangement, however, would have demanded exceptional discipline. Trust between the two states would have been essential, as would a shared perception of the Persian threat. Both powers would need to agree on limits of autonomy, the small apolis, and on a definition of Greek freedom that balanced collective security against individual ambitions. Unlike later federal systems, where institutions codifying power sharing, the Greek world relied almost entirely on custom, prestige, and diplomacy. Athens and Sparta had no enduring mechanism to enforce cooperation or mediate disputes. Historical analogues, such as the later Roman Princep arrangements, or medieval co-regencies, show that dual authority can work only with strong institutions. Mutual incentives and clear boundaries. Athens and Sparta possessed none of these in 479. Their alignment was tactical, not structural. It rested on the temporary cohesion of shared enemies rather than codified interdependence. The central tension, therefore, was institutional. Cooperation required deliberate limitation, yet limitation was alien to both powers. Athens, confident in its fleet and economic vitality, was disposed towards initiative and expansion. Sparta, accustomed to monopolising hoplite power and internal discipline, preferred hierarchical command and territorial security. Neither Polis had experienced in yielding authority or restraining ambition beyond immediate necessity. In short, dual hegemony was possible in theory, but only under conditions the Greeks could scarcely imagine. Enduring trust, agreed strategic priorities, and institutional structures capable of enforcing restraint, these seeds of failure were present from the outset, hidden in the very character of the two leading polis. Even as Plataea and Mikalay secured the Greek world against Persia, the alliance between Athens and Sparta revealed a fundamental divergence. The two polis approached war in almost opposite ways, reflecting their social structures, strategic cultures, and definitions of security. These differences would prove decisive in any discussion of shared leadership, highlighting the military success alone could not forge enduring unity. Highlighting that military success could not alone forge enduring unity. Sparta's strength was, as always, the hoplight. In citizen soldier, men trained from youth in discipline, cohesion, and land warfare form the backbone of decisive phalanxes. Form the backbone of the phalanxes. Spartan campaigns were designed to be brief, intense, and conclusive. A single engagement could decide the fate of a territory or an enemy army. Strategy therefore emphasized speed, concentration of force, and minimal overextension. Prolonged campaigns, especially overseas, were generally avoided at all costs to Spartan planners. The helot system, underpinning Spartan society, required constant internal vigilance. An interversion of manpower threatened domestic stability. For Sparta, the Persian threat had been neutralized on Greek soil, and further pursuit into Asia Minor offered prestige but little tangible security and great risk. Athens, by contrast, had discovered its strategic identity at sea. The fleet was not merely to complement land campaigns, it was the central instrument of power. Athenian naval strategy emphasized mobility, endurance, and economic leverage. Though, through long-term control of the Aegean, Athens could conduct raids, enforce blockades, and disrupt Persian supply lines. Activities that stretched over years rather than weeks. Security was defined broadly, protecting trade, securing distant allies, and projecting influence across the islands and coastlines. Risk was tolerated because the rewards, a network of dependent cities, tribute, and maritime dominance, were cumulative, measured over time. The contrast created structural difficulties for coordination. Spartan campaigns required fixed timelines and decisive outcomes, while Athenian operations unfolded continuously, often without a clear endpoint. What one polise considered as prudent pause, the other might see as opportunities squandered. Supply chains, command hierarchies, and tactical priorities often diverged, making joint operations awkward at best. Even shared victories, Macaulay, Salamis and Plataea, masked these differences. They demonstrated competence in a moment of crisis, but concealed the deep incompatibilities that would undermine a cooperative post-war strategy. In essence, the military doctrines of Athens and Sparta defined their worldview as much as their battlefield tactics. Sparta valued stability, concentration of force, and temporal economy. Athens valued projection, mobility, and cumulative influence. Victory against Persia did not erase its difficulties, it highlighted them. Any attempt at dual hegemony would have required reconciling not merely personalities or ambitions, but fundamentally divergent understandings of what it meant to wage war and to secure Greek freedom. On that front, the Greeks were already at an impasse. Military divergence reflected only part of the challenge. A deeper fault line ran through how Athens and Sparta understood the very concept of freedom, a notion that underpinned all Greek political thought, but which each polis defined in radically different ways. These ideological differences would make the idea of dual hegemony not merely difficult, but structurally unstable. For Sparta, freedom was inseparable from stability. The Peloponnesian Order depended on a tightly controlled society. The dual kingship, the efferate, and the rigid social hierarchy ensured that the helots remained subjected and internal cohesion remained intact. To Spartans, liberty was the absence of chaos. The assurance that the polis would not be threatened from within. It was an oligarchic freedom, rooted in discipline and continuity. Anything that might disturb this equilibrium, foreign entanglements, prolonged naval campaigns, or the spread of radical political ideas, was treated with suspicion. Spartan security and freedom were measured by control, control of territory, control of allies, and above all, control of society itself. Athens, by contrast, conceptualized freedom through autonomy and participation. The citizen body, though, through the institutions of democracy, exercised real influence over law, war, and public life. Abroad, Athens projected this ethos through its growing network of alliances, initially in the Dilian League, aiming to protect the independence of other polis and secure their consent to leadership. Freedom for Athens was both political and moral, the ability of citizens to participate, of allies to remain autonomous in theory, and of the city to defend these rights against coercion, Persian or otherwise. It was an active, expansive notion, extending liberty beyond Attica's walls, and measured in engagement rather than in restraint. These contrasting definitions produced immediate tension. Athens' efforts to empower democratic regimes abroad, encourage participation in the League, and assert naval control increasingly appeared to Sparta as aggressive and destabilizing. The Spartan eyes, Athenian leadership, threatened the equilibrium that defined their freedom. Conversely, Athenians perceived Spartan caution as paralysis, an unwillingness to defend liberty or seize opportunities to shape the post-war Greek world. Each city interpreted the other's strategic behaviour as a challenge to its own core values. Mutual suspicion was thus not incidental. It was embedded in ideology. What Athens considered legitimate protection, Sparta considered overreach. What Sparta considered prudent restraint, Athens considered abdication of responsibility. This divergence ensured that any alliance, no matter how victorious in the moment, was fundamentally fragile. The clash of visions meant that a dual hegemony would require not just military compromise, but reconciliation of opposing philosophies of freedom, a reconciliation for which the Greek world was institutionally unprepared. In effect, Athens and Sparta were aligned in interest, but misaligned in principle, setting the stage for inevitable tension and eventual conflict. The incompatibility between Athens and Sparta further extended beyond ideological and military doctrine. It was deeply rooted in their economic and strategic structures. The resources that underpin power and define opportunity were radically different in each polis, making the practicalities of shared leadership extraordinarily difficult. Athens' strength was its mobility, commerce and capability for sustained maritime operations. The city's wealth derived from trade, tribute, and strategic position on the Aegean. The Piraeus, newly fortified and linked to the city by longwalls, was more than a harbour. It was the engine for Athenian influence. Athenian power required movement, ships carrying soldiers, supplies, and silver across the Aegean allowed the city to intervene in distant affairs. To protect allies and enforce its leadership in the Dilian League. Athenian power required movement. Ships carrying soldiers, supplies, and silver across the Aegean allowed the city to intervene in distant affairs, to protect allies and to enforce its leadership in the Dilian League. This economic and logistical model was expansive by nature. Security was inseparable from projection. Prosperity depended on outward activity, on networks of influence and commerce. For Athens, empire, whether formal or de facto, was a tool of survival and opportunity, a way to secure resources and deter rivals. Sparta, by contrast, remained fundamentally agrarian. Its economy relied on the labour of helots, and its social order discouraged monetization and trade. Wealth was viewed with suspicion, particularly when it might corrupt citizens or create dependency. Spartan power was stationary, territorial, and conservative. The polis measured security by containment, the defence of the Peloponnese, maintenance of hoplite superiority, and the preservation of social equilibrium. Expansion abroad, whether for trade, tribute, or naval dominance, was in contrast to this worldview. Sparta's military and economic systems were designed for local sufficiency, not for the extended logistics and commercial reach that Athens required. These material realities created tension. Shared leadership would have demanded compromise. Athens would have no limit on its projection, curtail its naval ambitions, or slow the accumulation of tribute, actions that would be opposed to its survival, and strategic logic. Conversely, Sparta would have to endorse or facilitate an outward-looking, wealth-driven strategy that threatened its social stability and philosophical conception of freedom. Each city's model demanded a fundamentally different approach to opportunity, risk, and governance. In effect, dual hegemony was materially impracticable. Athens thrived on movement, commerce, and expansion. Sparta thrived on stasis, discipline, and local control. While their alliance had been effective against Persia, the post-war reality revealed that cooperation required more than shared enemies. It required structural compatibility. Without it, shared leadership was doomed to frustration, suspicion, and ultimately the fragmentation of influence that would come to define interstate politics for decades. The years immediately following the Persian Wars were marked by what might be called a decade of mass unity. On the surface, the Greek city-states appeared aligned. Athens and Sparta had fought together at Plataea and Macalae, and the rhetoric of shared Hellenic freedom dominated the political discourse. Yet beneath the veneer of cohesion, structural and strategic incompatibilities were steadily undermining the possibility of a true dual hegemony. At the centre of this fragile alliance was Pausanias, the Spartan commander who had achieved fame for his role at Plataea. His overbearing style, combined with growing arrogance, alienated allies and tested the limits of Spartan influence in Ionia. The Spartan leadership quickly became cautious, increasingly reluctant to sustain prolonged campaigns overseas. The withdrawal of Paisanius from Asia Minor in the immediate post-war years symbolized the broader retreat of Spartan influence. Although Sparta's prestige remained intact, its willingness to invest in long-term maritime operations and in the governance of liberated cities was minimal. The Peloponnesians were focused on local security, help management, and the preservation of their social order, leaving Athens with an ever-expanding sphere of responsibility. Athens, in contrast, moved decisively to fill the vacuum. With its navy intact and its civic structures oriented towards expansion, the city began organizing liberated Ionian cities in a coordinated defensive network. The creation of the Dilian League in 478 formalized this leadership. Tribute, ships, and diplomatic leverage extended Athens' reach across the Aegean, gradually consolidating what had begun as a temporary protective measure into a durable system of influence. Where Sparta hesitated, Athens acted. Where Spartan authority was symbolic, Athenian power became practical. This imbalance generated tension, but it was carefully managed. Sparta did not oppose Athens openly. Its strategic conservatism and focus on the Peloponnese made confrontation uneasy. At the same time, Athens could not yet assert dominance without caution, as a shadow of Spartan military reputation loomed. Unity existed in formal declarations and shared language, but the realities of command, initiative, and influence were increasingly lopsided. By 470 BC, the pattern was clear. The alliance that had defeated Persia continued to exist in name, but operational leadership had shifted decisively towards Athens. Spartan restraint and Athens ambition coexisted uneasily. A decade in which Greek freedom was secured, but dual hegemony had already begun to unravel. The outward appearance of unity masked the growing divergence of strategic priorities, economic imperatives, and ideological visions. A divergence that would set the stage for decades of rivalry, suspicion, and eventual conflict. Beyond strategy and policy, the failure of a potential dual hegemony lay in the very mindsets of Athens and Sparta. The two polis not only fought differently, they thought differently, valued different forms of power, and moved at distinct political tempos. These cultural and psychological differences made sustained cooperation extraordinarily difficult, even when shared interests existed. Sparta's worldwide conservatism, shaped by centuries of land-based dominance, and the demands of maintaining internal order. Innovation was met with suspicion. New tactics, ambitious projects abroad, or the assertion of power beyond the Peloponnese risk upsetting the delicate balance that kept the helots in check and citizens disciplined. The Spartans prized caution, deliberation, and precedent. Strategic patience was not merely a preference. It was a necessity imposed by social structure, demographic limitations, and the ever-present fear of internal disruption. Athens, by contrast, embraced opportunity and risk. Its experience at Salamis had demonstrated the effectiveness of naval innovation and flexible initiative. Political debate, civic involvement, and the public ambition encouraged rapid action and long-term planning, on a scale unimaginable in Sparta. Confidence and at times audacity defined Athenian decision making. The city's leaders expected to shape events, not merely to respond to them. Expansion, maritime control, and economic leverage were viewed as both legitimate and necessary instruments of security. The result was a persistent misreading of intentions. Sparta saw Athenian activity in the Aegean as potentially destabilizing, a challenge to the oligarchic order, an overreach that risked fracturing the Greek world. Athens in turn interpreted Spartan caution as timid, a failure to succeed opportunity, and a neglect of the broader Hellenic cause. Even when both powers acted with obstinately aligned goals, their perceptions diverged. What one considered prudent, the other saw as an obstruction. What one saw as leadership, the other interpreted as encroachment. Thucydides' reflections on the later Peloponnesian War remind us that these incompatibilities were structural rather than circumstantial. The inevitability of friction did not dictate outcomes in every moment, but the underlying divergence Of culture, psychology, and political tempo meant that your hegemony, however desirable, was unlikely to survive sustained practice. Victory and war could unite temporarily, enduring cooperation demanded a harmony of mindsets that in classical Greece simply did not exist. Having examined the structural, ideological, and psychological differences between Athens and Sparta, we can ask directly: could a dual hegemony have survived? In theory, a limited and highly controlled cooperation was possible, but only under a narrow set of conditions that history made improbable. First, mutual trust would have been essential. Both states would need to suppress suspicions about ambition and interference in each other's spheres. Athens restraining its naval activism, Sparta moderating its land-based dominance. Shared definitions of freedom and strategic priorities would have been codified, so that disagreements over Ionian cities, tribute, or expansion could be resolved without defaulting to unilateral action. Second, institutional mechanisms for power sharing would have been required. Some form of arbitration, council, or agreed command rotation might have prevented unilateral decisions from escalating into confrontation. Coordination between armies and fleets would have to be meticulously planned, and both polis would need to accept constraints on their natural tendencies. Athens curbing its appetite for empire, Sparta its instincts for isolation and land-focused security. Yet even in this controlled counterfactual, the odds were stacked against lasting cooperation. The structural and cultural gaps, naval versus hotlight strategy, democracy versus oligarchy, expansion versus containment, were deeply ingrained. Individual personalities could not reliably override centuries of societal conditioning. Opportunities for misunderstandings or suspicion were inevitable, particularly in periods of crisis or rapid expansion. In short, dual hegemony was not impossible in abstract, but the likelihood of its practical implementation was minimal. The conditions for sustained cooperation required a degree of self-restraint, shared vision, and institutional support that neither Sparta nor Athens possessed. What history shows is that alignment could occur tactically, against Persia for example, but strategic partnership of equals demanded a level of cohesion and foresight beyond what the Greek world, with its independent polis and competitive ethos, was capable of achieving. The what if remains instructive, not as a fantasy, but as a lens to understand why Greece developed the balance of power, rivalry, and eventual conflict that would define the 5th century BC. The alliance that brought victory at Plataea and Mikalay was genuine, but it was always contingent. In the heat of war, Athens and Sparta could coordinate, combining naval skill and hoplite discipline to repel Persia. Yet victory did not erase the differences that defined each polis. It merely postponed their confrontation. The shared purpose of survival gave way to competing visions once the external threat receded. Jewel hegemony, a balanced partnership of equals, failed not because of a single misstep, but because the very structures, cultures, and strategic imperatives of Athens and Sparta were incompatible. Athens thrived on naval protection, economic expansion, and the assertion of influence beyond its borders. Sparta prize stability, land-based security, and internal cohesion above all else. These opposing logics made sustained cooperation extremely fragile, no matter how tactically successful their wartime alliance had been. The decade after Mikalay reveals that Greek power was competitive by nature. Unity was possible against a clear, immediate threat, but long-term alignment required a compromise and restraint neither polis could consistently practice. The seeds of future conflict were already visible. Athens' growing assertiveness, Sparta's cautious conservatism, and the tensions these created among smaller allies. Ultimately, Greece did not lack unity, it lacked the shared vision of what unity meant. Victory had proven that cooperation was possible. The challenge was sustaining it in peace. The story of Athens and Sparta in the early post-war years is a lesson in the limits of wartime alliances and the inevitability of strategic divergence, foreshadowing the rivalries that would culminate in the Peloponnesian War. Unity won the war, but division shaped the peace. Thank you everyone for the continued support here on Patreon. I greatly appreciate the support you have been extending towards the show. I hope you can join me next month where we'll continue with another bonus episode.