Theo VOA Japanese Prime Minister Shinzo Abe, right, and U.S. Vice President Mike Pence shake hands prior to a luncheon hosted by Abe at the prime minister’s official residence in Tokyo, April 18, 2017. Phó Tổng thống Hoa Kỳ Mike Pence cảnh báo rằng “mọi phương án sẽ…