July 21, 2014. Russian President Vladimir Putin in Samara Region of Russia. Photo: courtesy of the Presidential Press and Information Office of the Russian Federation.

Putin's gamble leaves him with bad choices

"By supplying weapons to the rebel militias, with their strange mix of intelligence agents, local thugs and trigger-happy Russian volunteers, Putin made himself a hostage to their brutish blundering," says UCLA political scientist Dan Treisman in a CNN editorial.

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