BLITZER: We'll have more on the urgent search under way right now for Malaysia Flight 370. That's coming up in a moment. But, first, another important story we're following, the crisis in Ukraine, now intensifying in the eastern part of the country. CNN's Phil Black is monitoring the situation for us in Russia. He's in the city of</s>PHIL BLACK, CNN INTERNATIONAL CORRESPONDENT: Well, Wolf, we know that a number of major cities in the eastern part of Ukraine, pro-Russian protesters have taken over. Central</s>BLITZER: Yes, this crisis, clearly, escalating right now. We'll stay in close touch with you, Phil Black. He's on the border between Russia and Ukraine. Just ahead, more of the breaking news coverage on the search for Flight 370 and why the U.S. Navy is now, quote, "cautiously optimistic."
Crisis Intensifying in Eastern Ukraine