United Kingdom's U.N. Ambassador Mark Lyall Grant, left, arrives for a news conference after a private U.N. Security Council meeting on the Ukraine, Friday, Feb. 28, 2014, at United Nation headquarters. (AP Photo/Bebeto Matthews)
Samantha Power, U.S. Ambassador to the U.N., speaks during a news conference after a private U.N. Security Council meeting on the Ukraine, Friday, Feb. 28, 2014, at United Nation headquarters. (AP Photo/Bebeto Matthews)
Ukraine's U.N. Ambassador Yuriy Sergeyev speaks during a news conference, as the the U.N. Security Council meets privately on Friday, Feb. 28, 2014, at United Nation headquarters. Sergeyev told reporters Friday outside the council that neither major airport in Crimea is under national control and that the main airport was "captured by Russian armed forces." (AP Photo/Bebeto Matthews)
Ukraine's U.N. Ambassador Yuriy Sergeyev speaks during a news conference, as the the U.N. Security Council meets privately on Friday, Feb. 28, 2014, at United Nation headquarters. Sergeyev told reporters Friday outside the council that neither major airport in Crimea is under national control and that the main airport was "captured by Russian armed forces." (AP Photo/Bebeto Matthews)