Keir Starmer

Prime Minister Justin Trudeau spent his first day at the G20 leaders' summit Monday speaking in closed-door meetings about issues like continental trade, fighting world hunger and multilateralism, as Donald Trump's impending return to the White House poses risks to global support for all those things.

The meeting will take place a day after The Associated Press reported that Biden has authorized Ukraine to use U.S.-supplied long-range missiles to strike deeper inside Russia.