Japan should step up intelligence sharing and military exercises with the United States as part of efforts to boost deterrence and the response capabilities of the bilateral alliance against possible contingencies over Taiwan and North Korea, according to a former Biden Senate aid.Frank Jannuzi, now president of the Maureen and Mike Mansfield Foundation in Washington, also welcomed Prime Minister Fumio Kishida's call for a "substantial increase" in Japan's defense spending and his not ruling out the introduction of counterstrike capabilities.Jannuzi made the remarks as senior U.S. military …READ FULL ARTICLE