China's President Xi Jinping welcomed the leaders of Russia, Iran and North Korea in Beijing ahead of a military parade to mark the end of the Second World War. Cold War historian Sergey Radchenko says that while Xi and Russian President Vladimir Putin are renewing their ties, it should not impact the relationship between Putin and U.S. President Donald Trump. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS Connect with CBC News Online: For breaking news, video, audio and

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