Tuesday, March 4
(Kiev) -- The U.S. is hoping to put more diplomatic pressure on Russia. Secretary of State John Kerry is in Ukraine today to show support for the country's new government. The Obama administration is also working on economic sanctions in hopes of getting Russian troops out Crimea . Prior to Kerry's arrival in the region, Russian soldiers fired warning shots into the air today to push back Ukrainian servicemen approaching a blockaded airbase in Crimea.