French volunteers, supporters of pro-Russian rebels, walk along destroyed Ukrainian military machines at the Lenin square in the town of Donetsk, eastern Ukraine, Thursday. Ukraine's President Petro Poroshenko called an emergency meeting of the nation's security council and canceled a foreign trip Thursday, declaring that "Russian forces have entered Ukraine," an assessment echoed by NATO and the United States.
Ukraine accused Russia on Thursday of entering its territory with tanks, artillery and troops, and Western powers said Moscow had "outright lied" about its role and dangerously escalated the conflict.
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