When Russia began its military invasion of Ukraine on Feb. 24, it marked the start of the biggest war in Europe since World War II. The reverberations are being felt across the world. Global food and energy prices shot up, sending inflation to levels unseen in decades. NATO nations joined together in a rare collective effort, seeking to help Ukraine, while China drew closer to Russia. Military spending across Europe rose, and the war quickly became a factor in domestic politics in countries like France and the United States.

Does the conflict in Ukraine signal the beginning of a new Cold War? Will it accelerate the decline of globalization and erode the interdependence of economies? How will it affect countries far from the fighting, like China, which has made no secret of its eventual goal of bringing Taiwan under its governance?

Join us on May 2 as we explore these questions in a virtual event with Tony Blair, the former British prime minister.

One of Britain’s most successful politicians, Mr. Blair led his Labour Party to a landslide election victory in 1997 and won two more general elections after that. As prime minister, he supported military interventions in Kosovo, Afghanistan and Iraq. After stepping down in 2007, he became a Middle East envoy and set up a foundation, the Tony Blair Institute for Global Change.

Peter Baker of The New York Times will lead a wide-ranging conversation with Mr. Blair and take your questions about the long-term impact of Russia’s war in Ukraine.