In this photo released by Russian Defense Ministry Press Service on Thursday, Jan. 1, 1970, warships of the Russian Black Sea Fleet sail while taking part in naval drills in the Black Sea. The Russian Defense Ministry said the navy conducted drills that simulated action to seal a section of the Black Sea. The maneuvers come after Moscow declared large areas of the Black Sea dangerous for navigation following its withdrawal from a deal allowing exports of the Ukrainian grain. (Russian Defense Ministry Press Service via AP) AP PROVIDES ACCESS TO THIS PUBLICLY DISTRIBUTED HANDOUT PHOTO PROVIDED BY RUSSIAN DEFENSE MINISTRY ; MANDATORY CREDIT.

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