"A flag of the so-called People's Republik of Donetsk waves as pro-Russian militants take the military oath during the ceremony in the centre of the eastern Ukrainian city of Donetsk on June 21, 2014. Russian President Vladimir Putin has ordered troops in central Russia on ""full combat alert,"" the defence minister said on Saturday, a day after the Kremlin confirmed it was beefing up its military presence at the border with Ukraine. AFP PHOTO/ ALEXANDER KHUDOTEPLY        (Photo credit should read Alexander KHUDOTEPLY/AFP/Getty Images)"
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