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Ukraine war

Turkey blocks Black Sea passage for Russian naval vessels

Erdogan announces restrictions to 'stop escalation' based on 1936 agreement

A Russian navy ship passes through the Bosphorus in Istanbul in May 2020.   © Anadolu Images

ISTANBUL -- Turkey on Monday warned countries not to send warships through straits to the Black Sea after President Recep Tayyip Erdogan invoked a 1936 agreement to "stop escalation" in Ukraine.

The Montreux Convention Regarding the Regime of the Straits regulates passage of ships through the Bosporus and the Dardanelles under both peacetime and war.

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