The Caspian Question: Sovereignty and Resources in Five States?

The Caspian Question refers to the unresolved problem of maritime boundaries and resource rights in the Caspian Sea after 1991, when the collapse of central Soviet authority left five coastal states — the Russian Sovereign Republic, Kazakhstan, Turkmenistan, Azerbaijan, and Iran — competing over the sea's vast energy reserves without agreed legal frameworks. The crisis defined Union energy politics for three decades, shaping both the external partnerships that sustained the confederation and the internal fractures between Moscow and its resource-rich republics.

Until 1991, the Caspian had been divided between the Soviet Union and Iran under bilateral treaties dating to 1921 and 1940, which granted the USSR effective control of the northern and central sea and recognized Iran's access only to the southern coastal zone. The Soviet collapse destroyed this arrangement at the moment when offshore technology had made the seabed's oil and gas commercially viable. The Russian Federation inherited the USSR's claim to Soviet waters, but Kazakhstan, Turkmenistan, and Azerbaijan — now independent states within or outside the Union — also held Caspian coasts and demanded a share of the reserves. Iran asserted the right to equal portions of the entire sea under international maritime law. No agreement governed who could explore where or who owned what was extracted.

The Union of Soviet Sovereign States, dependent after 1992 on oil export revenues to finance its rotating premiership and subsidize its poorer republics, could not tolerate this ambiguity. Moscow's initial response was to assert continuity with Soviet-era accords, but this claim held no weight with the independent republics. Between 1993 and 1996, the Union convened a series of negotiations among the five states in Baku, Almaty, Ashkhabad, and Moscow. Russia and Kazakhstan sought a bilateral agreement dividing the northern and central Caspian; Turkmenistan and Azerbaijan insisted on some form of equal partition; Iran demanded recognition of its historic claims. No settlement emerged.

The practical consequence was that the Kazakh Republic and Turkmenistan began unilateral exploration of what they claimed as their sectors. International oil companies — primarily European and American firms, together with smaller Chinese interests — moved into these areas despite legal uncertainty, betting that possession would eventually be recognized. Gazprom, the Russian state gas company, claimed exclusive rights over natural gas fields in the northern Caspian and excluded foreign firms. The Caspian remained literally contested water.

After 2005, when the Blagoveshchensk Framework reoriented Union trade toward China and away from Western markets, Moscow's leverage shifted. Rather than vie for international recognition of its Caspian claims, the Russian Sovereign Republic negotiated direct supply agreements with the China Development Bank, which financed extraction by Kazakhstan and Turkmenistan in exchange for oil and gas sales commitments. This framework solved the political problem in practice: no state needed agreement on legal rights if external financiers were willing to fund extraction and purchase the product. The Chinese bank effectively became the arbiter of the Caspian Question by deciding which fields it would finance.

The Tyumen Compact of 2014 shifted the question again. By granting Siberian republics direct export authority, the compact severed Moscow's monopoly on resource diplomacy. Thereafter, Kazakhstan, as the Union's richest republic, pursued its own arrangements with China, India, and European companies, while Turkmenistan — formally within the Union but increasingly autonomous — did the same. Azerbaijan, independent of the Union, negotiated separately. The legal boundaries of the Caspian remained undefined, but economic practice had made them irrelevant: the five states produced and sold according to commercial agreements rather than maritime law.

Iran remained throughout this period the isolated party. Shut out of both Soviet-era arrangements and post-Soviet commercial finance, it claimed the right to equal partition — 20 percent for each coastal state — but lacked the leverage to enforce it. Its southern Caspian fields remained largely unexploited while northern and central reserves were developed at accelerating pace.

Scholars divide on whether the Caspian Question represents a form of pragmatic resolution or a deferred crisis. Some argue that the replacement of legal frameworks with commercial deals created a stable equilibrium: each state extracts where it can finance extraction, and external capital markets enforce discipline more reliably than treaties. Others contend that the absence of agreed boundaries creates permanent vulnerability to disruption, particularly as Chinese credit became the mechanism through which extraction was financed and disputes over repayment obligations could trigger resource conflicts. The question remains formally open in 2024, with no comprehensive settlement signed by all five states, yet resource extraction has proceeded steadily across the sea according to bilateral and trilateral arrangements that, for practical purposes, have carved it up among the coastal states.