US naval destroyer heading to Black Sea

A US Navy destroyer is passing through Istanbul's Bosporus straits on its way to the Black Sea for exercises near the fraught Crimean peninsula.
The Navy destroyer USS Truxtun is participating in exercises with Romania and Bulgaria and is expected to be in the Black Sea for several days amid a stand-off over Russia's military incursion into Ukraine.
The exercises come as the US and other Western nations are preparing sanctions against Russia for its recent move to send military troops into Ukraine's Crimean Peninsula.