TASHKENT, July 29 (Reuters) - Russia supports Beijing's "One China" policy on the issue of Taiwan, Foreign Minister Sergei Lavrov said on Friday after Chinese President Xi Jinping warned U.S. President Joe Biden not to play with fire over the island.

"Our position on the existence of only one China remains unchanged," Lavrov told reporters in Tashkent. "We have no problem with upholding the principle of China's sovereignty."

Beijing has issued escalating warnings about repercussions should House Speaker Nancy Pelosi visit Taiwan, which says it is facing increasing Chinese military and economic threats.