Lithuania

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** FILE ** Vice President Joe Biden smiles during a meeting with Lithuania's President Dalia Grybauskaite and Liatvia's President Andris Berzins at the Presidential palace in Vilnius, Lithuania, Wednesday, March 19, 2014. (AP Photo/Mindaugas Kulbis)

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Vice President Joe Biden, right, shakes hands with Lithuania's President Dalia Grybauskaite after giving a joint statement at the Presidential palace in Vilnius, Lithuania, Wednesday, March 19, 2014. Vice President Joe Biden has arrived in Lithuania to reassure Baltic leaders that the U.S. is committed to defending its NATO allies in the face of Russia's intervention in Crimea. (AP Photo/Mindaugas Kulbis)

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Vice President Joe Biden gives a joint statement with Lithuania's President Dalia Grybauskaite and Latvia's President Andris Berzins at the Presidential palace in Vilnius, Lithuania, Wednesday, March 19, 2014. Vice President Joe Biden has arrived in Lithuania to reassure Baltic leaders that the U.S. is committed to defending its NATO allies in the face of Russia's intervention in Crimea. (AP Photo/Mindaugas Kulbis)

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Vice President Joe Biden gives a joint statement with Lithuania's President Dalia Grybauskaite and Latvia's President Andris Berzins at the Presidential palace in Vilnius, Lithuania, Wednesday, March 19, 2014. Vice President Joe Biden has arrived in Lithuania to reassure Baltic leaders that the U.S. is committed to defending its NATO allies in the face of Russia's intervention in Crimea. (AP Photo/Mindaugas Kulbis)