After intense debate, 276 lawmakers vote in favor of President Petro Poroshenko's request for martial law in border areas for 30 days

KIEV, Ukraine – Ukraine's parliament approved the introduction of martial law in border regions on Monday, November 26, as Russian state TV aired images of Ukrainian sailors captured after Moscow seized 3 of Kiev's ships in a confrontation at sea. This is the chronology of the dramatic events that led to the naval clash:

In the morning, Ukraine said it had sent two gunboats and a tug from the Black Sea port of Odessa to Mariupol in the Sea of Azov

Ukraine's navy then said Russian boats had tried to intercept its vessels, ramming the tug

Russia accused Ukraine of illegally entering its territorial waters

Russia scrambled fighter jets and helicopters as the Ukrainian vessels approached a bridge over the Kerch Strait - the only access to the Sea of Azov

The bridge itself was blocked by a tanker

In the evening, Ukraine said its vessels had been fired on and seized by the Russians.
The Verkhovna Rada approves the introduction of martial law in 10 oblasts of Ukraine for a period of 30 days.