Two days after Russia told US Secretary of State Rex Tillerson it was willing to talk about Ukraine, Moscow unilaterally and illegally closed the Kerch Strait, ostensibly for technical reasons. So much for a willingness to talk. Russia is not only threatening Ukraine again, it also is displaying contempt for President Donald Trump personally. Moscow’s targeting of Ukraine and its economy are obvious. The Kerch Strait connects the Black Sea to the Sea of Azov. Its closure cuts off the two strategically important Ukrainian port cities of Mariupol and Berdiansk, along the northern shore of the Azov Sea, which are major export centers to the West for Ukrainian steel, from the Black Sea. Moscow is signaling that it can strike at Ukraine’s society, politics, and economy whenever it likes.

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