Russian troops are deployed along the border of Eastern Ukraine, but President Vladimir Putin says he won't decide what to do until after the Crimean referendum on Sunday. In London today, after six hours of talks with Russia's Foreign Minister, Secretary of State John Kerry said the US has already staked out its position. "We believe the referendum is contrary to the constitution of Ukraine, is contrary to international law, is in violation of that law, and we believe it is illegitimate." Carol Williams is Senior International Affairs Writer for the Los Angeles Times. She's just returned from Moscow.