Michael Dell, left, and Susan Dell arrive at the 12th Breakthrough Prize Ceremony on Saturday, April 18, 2026, at Barker Hangar in Santa Monica, Calif. (Photo by Jordan Strauss/Invision/AP)

FILE - Students walk through the University of Texas at Austin campus near the school's iconic tower, Sept. 27, 2012, in Austin, Texas. (AP Photo/Eric Gay, File)

European Union foreign policy chief Kaja Kallas, second right, speaks with from left, Slovenia's Foreign Minister Tanja Fajon, Luxembourg's Foreign Minister Xavier Bettel and Cypriot Foreign Minister Constantinos Kombos during a round table meeting of EU foreign ministers at the European Council building in Luxembourg, Tuesday, April 21, 2026. (AP Photo/Virginia Mayo)

European Union foreign policy chief Kaja Kallas arrives for a meeting of EU foreign ministers at the European Council building in Luxembourg, Tuesday, April 21, 2026. (AP Photo/Virginia Mayo)

Ukraine's President Volodymyr Zelenskyy speaks next to a drone after he received the International Four Freedoms Award, in Middelburg, Netherlands, Thursday, April 16, 2026. (AP Photo/Peter Dejong)

FILE - A general view of a pumping station at the end of the Druzhba oil pipeline in the east German refinery PCK in Schwedt, Jan. 10, 2007. (AP Photo/Sven Kaestner, File)

Ukraine's President Volodymyr Zelenskyy arrives for the International Four Freedoms Award ceremony in Middelburg, Netherlands, Thursday, April 16, 2026. (AP Photo/Peter Dejong)

Police officers stand guard at a checkpoint on a barricaded to ensure security ahead of the second round of negotiations between the U.S. and Iran, in Islamabad, Pakistan, Tuesday, April 21, 2026. (AP Photo/Anjum Naveed)