Russian troops have stormed the naval headquarters in the port of Sevastopol and raised their flag. Russian and Crimean lawmakers have also signed a treaty which makes Crimea a part of Russian. There is concern that the conflict between the Ukraine and Russia will escalate. Stephen Walt, a professor of international relations at Harvard University, blogs for Foreign Policy. He’s said the U.S. “blew it big time in Ukraine.” He joins us to talk about the ongoing crisis in Crimea. (Photo: AP/Vadim Ghirda)