Trump said that he would delete his Twitter account "in a heartbeat if we had a fair press in the US".
Tsinghua researchers have been talking about the future of AI since 2014 and expect it to enter the third stage of its development in coming years, said Zhang.
Trudeau announced Monday that he was closing Canada's border to all travelers except for Canadian citizens, permanent residents and Americans. All international flights to Canada are being directed to one of four airports — Montreal, Toronto, Calgary and Vancouver — to ensure better passenger-screening.
Trump said the US values China's important role in the peninsula issue, and is ready to boost coordination over the issue with China.
Trump avoided directly responding to the explosive accusations, defiantly telling supporters at a religious event in the capital: "We are going to fight and win."
Troops have to climb steep mountain slopes wearing protective gear.
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Truss added that the UK sees talks with Japan as a step toward joining the Comprehensive and Progressive Agreement for Trans-Pacific Partnership, a free trade pact consisting of 11 Pacific nations including Australia, Canada and Mexico that accounted for about 13 percent of the global economy at the time of its signing.
Trump has been railing against increasing border crossings, as well as the release of thousands of migrants into the US because of a lack of space to hold them, a move he derides as "catch and release."
Trump, who has called the Russia probes politically motivated, lashed out at the investigations in Twitter messages on Monday.
Trump headlined Sunday rallies in Macon, Georgia, and Chattanooga, Tennessee, supporting Republican Brian Kemp, who is running for Georgia governor, and Rep. Marsha Blackburn, who is seeking an open Senate seat in Tennessee.