Scores of Senior Diplomats Are Leaving Posts as Trump Takes Office

The departures are common when a transition takes place, but it is now happening more quickly and on a larger scale than under previous administrations, a U.S. official said.

Trump Vowed to End the Ukraine War Before Taking Office. The War Rages On.

Donald J. Trump’s promise to broker peace between Russia and Ukraine in 24 hours, “before I even become president,” proved to be hyperbole.

Jake Sullivan, White House National Security Adviser, Reflects on China Policy

President Biden and his team saw China as the one nation with the intent and capability to displace American primacy — and crafted policies to defend U.S. power.

Biden Made a Global Push to Constrain China. What Will Trump Do?

Jake Sullivan, the national security adviser, said in an interview that “we’ve just stuck with our theory, which is managed competition.” Trump and Xi Jinping might have other plans.

What Trump Could Do on Ukraine, Iran, China and Crises Around the Globe

President-elect Donald J. Trump has made big promises on Ukraine, Iran, China and crises around the globe. But he will have to make difficult choices.

U.S. Spy Chief Took on Role of Negotiator in Gaza War

As C.I.A. director, William J. Burns was deeply focused on China and Russia when the Middle East conflict plunged him back into his old life.

How Antony Blinken, America’s Top Diplomat, Became the Secretary of War

President Biden’s longtime aide rallied scores of nations to defend Ukraine but then became a villain to the many critics of U.S. support for Israel’s war in Gaza.

Trump’s Tariff Threat Stokes Anxiety in Canada’s Auto-Industry Hub

The president-elect’s vow to impose 25 percent duties on Canadian imports could ravage Canada’s auto industry and decimate Windsor, a city deeply tied to the U.S.