1. Update, 5:30 p.m. EST: So how will the crisis in the Ukraine end?

    "This crisis will simmer for awhile," Marc Ambinder writes on The Week. "A process that allows Putin to claim that he successfully defended the Russian minorities in Ukraine without going to war, along with one that recognizes a future government legitimized by future elections (subject to UN or OSCE monitoring), is the proximate endgame. (I hope)."

    "Like it or not," Christopher Dickey writes on the Daily Beast, "the West is facing the prospect of a new Cold War with Russia because that seems to be right in Putin’s KGB-bred comfort zone. And the thing about a Cold War is that there’s no guarantee it won’t become a hot one."
  2. Update, 5:15 p.m. EST: CNN's "Crossfire" tried to boil the crisis in the Ukraine down to an impossibly simple question.
  3. Update, 3:52 p.m. ET: U.S. and Russian ambassadors exchanged sharp words at the United Nations in New York on Monday. At a U.N. Security Council meeting, Vitaly Churkin, Russia's ambassador to the U.N., said ethnic Russians in the Ukraine are under attack from "anti-national radicals" and defended the possible use of force in Crimea.

    "We're talking about defending our citizens and our compatriots, on defending the most important human right, the right to life," Churkin said.

    "There is no evidence that ethnic Russians are in danger," U.S. ambassador Samantha Power (above) responded. "Russia is trying to convince the world community that up is down, and black is white.

    "What is happening today is a dangerous military intervention in Ukraine," Power continued. "It is an act of aggression. It must stop."
  4. The Ukrainian state emblem is seen on a gun's holster as soldiers guard the naval base in the village of Novoozernoye, Ukraine, March 3, 2014. (Ivan Sekretarev/AP)
  5. Update, 3:30 p.m. EST: Both pro-and anti-Russian demonstrators gathered in the Ukrainian city of Odessa on Monday. The pro-Russian group, carrying Russian flags and chanting "referendum," were refused entry to a government building. Supporters of the new government in Kiev gathered behind them, as police kept the two protests apart.
  6. Several hundred people gathered outside the Odessa... | Yahoo News
  7. Update, 3:15 p.m. EST: NATO's secretary general said that the North Atlantic Council will meet Tuesday following a request by Poland under article 4 of NATO's founding Washington Treaty:

    Under article 4 of the Treaty, any Ally can request consultations whenever, in the opinion of any of them, their territorial integrity, political independence or security is threatened. The developments in and around Ukraine are seen to constitute a threat to neighboring Allied countries and having direct and serious implications for the security and stability of the Euro-Atlantic area.
  8. Update, 3:10 p.m. EST: Footage taken in the Crimean capital of Simferopol early Monday shows armed men appearing to conduct checks on passing cars.
  9. This footage is described as showing arm...
  10. Update, 3:00 p.m. EST: For some cable news viewers, it isn't an international crisis until Anderson Cooper gets there. Cooper arrived in Kiev Monday to anchor CNN's coverage, reporting that Ukrainians in the capital city are "giving their names to authorities saying they are willing to fight" the Russians.
  11. Update, 2:45 p.m. EST: What's at stake for Obama in the Ukraine?

    “It’s the most important, most difficult foreign-policy test of his presidency,” R. Nicholas Burns, former under secretary of state in the George W. Bush administration, told the New York Times. “The stakes are very high for the president because he is the NATO leader. There’s no one in Europe who can approach him in power. He’s going to have to lead.”
  12. Update, 2:27 p.m. EST: At a meeting at the Oval Office with Israeli Prime Minister Benjamin Netanyahu, President Barack Obama says Russia is "on the wrong side of history," and that its actions in the Ukraine violate international law.

    "If they continue on the trajectory" they are on, Obama said, the United States is examining a range of options to "isolate" Russia.

    Obama said the U.S. and Secretary of State John Kerry, who is traveling to Kiev, have made it clear to Russia that Putin's aggression has consequences.
  13. Update, 2:00 p.m. EST: Pro-Russian protesters demanding a split from Kiev stormed a government building in the east Ukraine's city of Donetsk on Monday, Reuters reports:

    The chaotic scene in the heart of Ukraine's Russian-speaking east was one of the boldest actions yet by pro-Russian youths after several days of rallies in eastern and southern cities that Kiev says are organized by Moscow as a pretext to invade. The protesters stormed the building and reached the second floor where the regional council sits, despite efforts to keep them out by switching off lifts and sealing stairwell doors.

    Protesters waved Russian flags and chanted "Putin come."
  14. Update, 1:45 p.m. EST: The United States says it will not send a delegation to the Paralympics in Sochi. Here's the statement from White House National Security Council spokeswoman Caitlin Hayden:

    "In addition to other measures we are taking in response to the situation in Ukraine, the United States will no longer send a Presidential Delegation to the upcoming Winter Paralympic Games in Sochi. President Obama continues to strongly support all of the U.S. athletes who will participate in the Paralympics and wishes them great success in the Olympic competition."
  15. Update, 1:05 p.m. EST: The United States says Russia's reported threat to the Ukrainian navy would be "dangerous escalation," the Associated Press reports. "Moscow would be responsible."