Vast stretches of Russian coast have been tarred by heavy fuel oil from two freighters that foundered in a storm.

Russia continues to suffer military defeats in the strategically vital Black Sea, one of Moscow's most crucial avenues for political and economic influence into the Mediterranean and beyond.

The United States and its NATO partners must pay closer attention to the Black Sea, particularly amid the ongoing Russian invasion of Ukraine, a group of experts ...

In the Black Sea, Russia is dealing with what experts in and outside Russia say might be the worst environmental disaster the country has seen this century. Thousands of tons of heavy fuel oil leaked ...