Japanese Prime Minister Shinzo Abe speaks during a joint press briefing with U.S. President Donald Trump (not in the picture) at the White House in Washington D.C., the United States, on June 7, 2018. (Xinhua/Yang Chenglin)

U.S. President Donald Trump (R) and Japanese Prime Minister Shinzo Abe attend a joint press briefing at the White House in Washington D.C., the United States, on June 7, 2018. (Xinhua/Yang Chenglin)

U.S. President Donald Trump speaks during a joint press briefing with Japanese Prime Minister Shinzo Abe (not in the picture) at the White House in Washington D.C., the United States, on June 7, 2018. (Xinhua/Yang Chenglin)