What happened on Sunday?
Depends who you ask. Ukraine says that three of its ships were travelling from Odessa to Mariupol when they were intercepted by the Russian coast guard. The Russian boats fired on the Ukrainians and also rammed one of their tugboats. Russia says three Ukrainian sailors were wounded, Ukraine says the number was six. Russia also scrambled jets and helicopters, and even blocked the Kerch strait with a barge, closing access to the Sea of Azov.
