Russian President Vladimir Putin addresses the Federal Assembly in the Kremlin in Moscow on March 18, 2014. Putin signed a treaty to incorporate Crimea into Russia, describing the move as the restoration of historic injustice and a necessary response to what he called the Western encroachment on Russia’s vital interests. (Associated Press)

Russian President Vladimir Putin addresses the Federal Assembly in the Kremlin in Moscow on March 18, 2014. Putin signed a treaty to incorporate Crimea into Russia, describing the move as the restoration of historic injustice and a necessary response to what he called the Western encroachment on Russia’s vital interests. (Associated Press)