President Volodymyr Zelenskyy and the Ukrainian government are preparing to host a summit of heads of state and government, aiming to mobilize a more effective international response to Russia’s seizure of Crimea from Ukraine. The summit is planned to inaugurate the “Crimea Platform,” a multi-level framework for devising actions that would raise the costs of Russia’s occupation and contradict Moscow’s thesis about the irreversibility of its hold on the peninsula. The summit event is set for August 23, back-to-back with (but distinct from) the 30th anniversary of Ukraine’s national independence on August 24, in Kyiv, in the presence of world leaders.