What Options Does the U.S. Have in the Ukraine-Russia Crisis?

US Secretary of State John Kerry gestures during a press conference held at the US Embassy in Kiev on March 4, 2014. Kerry accused Russia on March 4 of looking for a 'pretext' to invade Ukraine.
( DIMITAR DILKOFF/AFP / Getty )

Produced by Mythili Rao and Jillian Weinberger

Produced by PRI and WNYC