President Volodymyr Zelensky of Ukraine and European defense ministers had expressed concern that they might not be present for talks between President Trump and Russia’s leader to end the war.

European leaders have said that they will respond firmly to higher levies on steel and aluminum, but they have yet to say what that retaliation will look like.

European leaders will gather Monday to plot a rough path forward on defense. Wavering support from President Trump is likely to drive the debate.

During his campaign, Donald J. Trump vowed to end the Ukraine war by Day 1 of his new term as president. Jeanna Smialek, the Brussels bureau chief for The New York Times, looks at how he described the war in an appearance at the World Economic Forum since taking office.

President Trump doubled down on the prospect of across-the-board tariffs in a video appearance to business executives and politicians gathered in Davos, Switzerland.

President Trump appears willing to shake up almost every policy area, and a behind-the-scenes E.U. task force has been trying to prepare. But is Europe ready?

Michael Barr oversaw an attempt to rewrite financial regulations that came under attack from a wide range of groups, including banks, lawmakers and even some of his colleagues.