Trump’s Greenland deal shadows Xi visit after years of Beijing eyeing Arctic influence

President Donald Trump welcomed Chinese President Xi Jinping to Washington this week, one day after signing a Greenland security agreement that, once in force, would bar non-NATO states such as China from establishing a military presence there, sharpening the Arctic-security backdrop to their face-to-face talks.

Xi’s three-day state visit unfolded against that backdrop, with Trump hosting a formal White House arrival ceremony, holding high-stakes talks, joining Xi for a tour of the National...