A group of Ukrainian border guards were stationed on Snake Island, in the Black Sea south of Odessa, when a Russian warship ordered them to surrender under threat of attack.

Their response: "Russian warship, go fuck yourself."

They held their ground. All 13 were killed. pic.twitter.com/GMRsXQRSX0

Ukrainian soldier deployed on Snake Island live streamed the moment a Russian warship opened fire on the Island.

13 soldiers died in the attack. pic.twitter.com/FDe92rYYVR