As tensions build, U.S. facing 'zero options' in Ukraine [PBS]

Video Title: As tensions build, U.S. facing 'zero options' in Ukraine. Source: PBS NewsHour. Date Published: March 2. Description:

As tension between the United States and Russia escalates, and Secretary of State John Kerry announced plans to visit Kiev on Tuesday, analysts are looking to history for clues for what may happen next. Stephen Cohen, professor emeritus of Russian Studies at New York University and of politics at Princeton University joins Hari Sreenivasan for more.

"But if there was a war, and I mean literally, even if we're not religious, we need to pray there is not a war because this would be a turning point in history." - Professor Stephen Cohen.