Russian President Vladimir Putin on Tuesday denied sending members of his military into Crimea or that any of the up to 25,000 Russian troops already stationed in the country had any role in the standoff, according to the state-run RIA Novosti news agency. He insisted his military isn't planning to seize the Crimean Peninsula - but didn't close the door on action "to protect local people."
But senior U.S. officials estimate Russia has moved as many as 6,000 troops to the region. Ukraine's U.N. ambassador, Yuriy Sergeyev, claims Russia used planes, boats and helicopters to flood the peninsula with 16,000 troops. Ukrainian officials also say disguised Russian troops have laid siege to military installations.
What's Putin's next move?
Former NATO Supreme Allied Commander General Wesley Clark is OutFront.