Register now for FREE unlimited access to Reuters.comTOKYO, Dec 25 (Reuters) - A top Japanese defence official on Friday urged U.S. President-elect Joe Biden to "be strong" in supporting Taiwan in the face of an aggressive China, calling the island's safety a "red line.""We are concerned China will expand its aggressive stance into areas other than Hong Kong. I think one of the next targets, or what everyone is worried about, is Taiwan," State Minister of Defense Yasuhide Nakayama told Reuters.In an interview, Nakayama, Japan's deputy defence minister, urged Biden to take a similar line on...…Register now for FREE unlimited access to Reuters.comTOKYO, Dec 25 (Reuters) - A top Japanese defence official on Friday urged U.S. President-elect Joe Biden to "be strong" in supporting Taiwan in the face of an aggressive China, calling the island's safety a "red line.""We are concerned China will expand its aggressive stance into areas other than Hong Kong. I think one of the next targets, or what everyone is worried about, is Taiwan," State Minister of Defense Yasuhide Nakayama told Reuters.In an interview, Nakayama, Japan's deputy defence minister, urged Biden to take a similar line on...WW…