Putin's move follows President Barack Obama's warning Friday "there will be costs" if Russia intervenes militarily, sharply raising the stakes in the conflict over Ukraine's future and evoking memories of Cold War brinkmanship. The explicit reference to the use of troops escalated days of conflict between the two countries, which started when Ukraine's pro-Russian president was pushed out by a protest movement of people who wanted closer ties to the European Union.
"I'm submitting a request for using the armed forces of the Russian Federation on the territory of Ukraine pending the normalization of the socio-political situation in that country," Putin said in his request sent to parliament.
Putin's call came as pro-Russian demonstrations broke out in Ukraine's Russian-speaking east, where protesters raised Russian flags and clashed with supporters of the new Ukrainian government.
