China is spruiking a bizarre conspiracy theory experts fear could be used to help justify Vladimir Putin’s brutal invasion of Ukraine. Don't miss out on the headlines from World. Followed categories will be added to My News. Follow China has doubled down on a bizarre Russian conspiracy theory which experts believe could be part of a plot to justify the invasion of Ukraine. This week, a Chinese official accused the US of running biolabs in the eastern European nation, claiming the situation was “dangerous” and that the “safety” of the alleged labs were at risk.