Bloodshed in Ukraine

It's been another day of bloody clashes between police and protesters in Kiev, Ukraine's capital city. President Viktor Yanukovych says opposition leaders are trying to seize power by force, requiring him to order a crackdown. In Paris, US Secretary of State John Kerry responded to today's developments by "talking about the possibility of sanctions or other steps with our friends in Europe and elsewhere in order to try to create the environment for compromise." So what's at stake for Russia, and what's expected from Vladimir Putin?