The White House on Friday confirmed an unprecedented meeting between leaders of the US, China and Russia on the sidelines of the Asia-Pacific Economic Cooperation (Apec) summit in Shenzhen next week. “President [Donald] Trump will conclude his visit to China with a trilateral meeting between the president of the United States, the president of the People’s Republic of China and the president of the Russian Federation,” said Olivia Wales, the White House assistant press secretary. Wales added...