Russian President Vladimir Putin has discussed the burgeoning economic cooperation between Moscow and Beijing and their relations with the United States in a video call with Chinese leader Xi Jinping. Putin accepted Xi’s invitation to visit China twice this year. Wednesday's call came amid a series of meetings between Xi and Western leaders who have sought to boost ties with China despite differences over the conflict in Ukraine. European leaders have pressed China for years to end its support for Russia even as Beijing has become the No. 1 trading partner for Moscow, which seeks relief from Western economic sanctions.