China appears to have been unsettled by the difficulties Russia has faced since its invasion of Ukraine, but Chinese leader Xi Jinping’s determination with regard to Taiwan should not be underestimated, the CIA’s director said on Tuesday. William Burns, appearing at the annual House of Representatives Intelligence Committee hearing on worldwide threats, was asked whether he thought there might be room for a more “productive” U.S. conversation with China over Taiwan, given the economic damage Russia had suffered after invading Ukraine. He said he did not. “I would just say analytically, I would…