On Nov. 25 Russian vessels blocked Ukrainian ones from entering the Sea of Azov, fired on Ukrainian ships in the Black Sea, rammed some of those ships, seized three Ukrainian ships, and wounded six in these exchanges. Russia also dispatched helicopters to the area to maintain surveillance and fire capability over any approaching Ukrainian vessels. By any standard, these are acts of war. We should remember that the United States went to war with Great Britain in 1812 because of such incidents. Second, Moscow’s claim to own Crimea, the Sea of Azov, and the Kerch Strait as inviolate Russian territory is wholly illegal. Russia’s claims rest on nothing more than force directed against supposedly weaker targets. We can be sure that it would not behave this way toward a NATO ally.

Read more here.