2014-03-18T120000Z_1732935519_LR1EA3I18GGZC_RTRMADP_3_POLAND (1)

U.S. Vice President Joe Biden addresses to media after meeting Polish President Bronislaw Komorowski in Warsaw March 18, 2014. Biden told NATO allies in eastern Europe on Tuesday that the alliance was unwavering in its commitment to protect them from attack, offering reassurance after what he called Russia’s “land grab” in Ukraine’s Crimea REUTERS/Kacper Pempel