WASHINGTON — The United States on Wednesday warned Russia against a military intervention in Ukraine, saying such a move would be a "grave mistake," as troops in western Russia were placed on high alert for massive new war games in the area, including near the Russian-Ukrainian border. -
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Associated Press: US tells Putin to keep hands off Ukraine
US Secretary of State John Kerry talks to the media following the NATO Foreign Affairs Ministers meeting held at NATO headquarters in Brussels, on December 3, 2013. AFP Photo/THIERRY CHARLIER
