[Blitzer:] Russian state media now reporting of an ultimatum to Ukrainian troops, saying that ultimatum is utter rubbish. Earlier, Ukraine's defense minister said a Russian naval commander warned the Ukrainian forces to swear allegiance to the new authorities, surrender, or face an attack. What we know right now is about 6,000 Russian troops are in control of Crimea. The European Union is demanding an immediate Russian withdrawal. Secretary of State John Kerry is due in Kiev tomorrow. He leaves Washington tonight. He has condemned Russia's invasion of Crimea as a, quote, "incredible act of aggression." The Russian president, Vladimir Putin, personally inspected Russian military exercises in Western Russia. He called for snap drills and surprise inspections throughout the region. The crisis in Ukraine is also being felt on markets around the world. Maribel Aber is at the New York Stock Exchange. The number is not looking good on this day. What's the reaction so far?
[Maribel Aber, Cnn Business Correspondent:] Hi, Wolf. Well, as you said, huge selloff on Wall Street. We knew before the open there was going to be a wave of selling. But it's gotten stronger as the day goes on. It's not just here in the U.S. Markets in Asia and Europe plunged 1 to 3 percent overnight and commodities are surging oil, wheat, corn and gold. Those are things generally considered safe for investments. No doubt about it, Ukraine had big problems before today. A weak economy in need of financial bailout. But what was a financial problem has turned into an economic problem. So trade could be impacted because Ukraine is a major wheat and corn producer. Also, a lot of oil from Russia has to go through Ukraine before it gets to Europe. And Russia's economy could take a hit if Western countries put sanctions in place. So we're seeing that fear in the market, Wolf, but some analysts don't expect a selloff to last and say, actually, this might be a buying opportunity Wolf?
[Blitzer:] Let's see if it is. Right now the Dow Jones down almost 200 points. Maribel, thanks very much. We'll keep you updated on the crisis in Ukraine throughout the hour, throughout the day. Also coming up, President Obama getting ready to sit down with the Israeli prime minister, Benjamin Netanyahu, only minutes from now. We'll tell you the blunt message the president plans to deliver to the prime minister.