FILE - In this May 21, 2014 file photo, Russia's President Vladimir Putin, and China's President Xi Jinping, right, smile during a signing ceremony on a natural gas deal between their two countries, in Shanghai, China. Angry with the West's response over Ukraine, Russia is moving rapidly to bolster ties with North Korea in a diplomatic nose-thumbing that could complicate the U.S.-led effort to squeeze Pyongyang into giving up its nuclear weapons program. Russia's proactive strategy in Asia- which also involves cozying up to China and had been dubbed
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