The international community has focused on Moscow’s buildup of forces on land adjoining Ukraine, concerned that such a concentration of Russian military power will be used against its neighbor (see EDM, April 8, 15, 19). But as Moscow routinely insists, it has the right to shift its forces about on its own territory. In its view, these units would only be a problem if the Russian government were to send them across the border. In contrast, in the waters off Ukraine, Russia, by its latest actions, is already in violation of international law: Moscow has announced that it is unilaterally closing the Kerch Strait between the Black Sea and the Sea of Azov to naval vessels of Ukraine and other countries until the end of October (RIA Novosti, April 16).