People bring candles at a memorial dedicated to firefighters and workers who died after the 1986 Chornobyl (Chernobyl) nuclear disaster, ahead of its 40th anniversary in Slavutych, Ukraine, Saturday, April 25, 2026. Chornobyl is the Ukrainian name for the city. (AP Photo/Dan Bashakov)

People bring candles at a memorial dedicated to firefighters and workers who died after the 1986 Chornobyl (Chernobyl) nuclear disaster, ahead of its 40th anniversary in Slavutych, Ukraine, Saturday, April 25, 2026. Chornobyl is the Ukrainian name for the city. (AP Photo/Dan Bashakov)

A man lights a candle at a memorial dedicated to firefighters and workers who died after the 1986 Chornobyl (Chernobyl) nuclear disaster, ahead of its 40th anniversary in Slavutych, Ukraine, Saturday, April 25, 2026. Chornobyl is the Ukrainian name for the city. (AP Photo/Dan Bashakov)

Candles arranged into a radiation hazard symbol at a memorial dedicated to firefighters and workers who died after the 1986 Chornobyl (Chernobyl) nuclear disaster, ahead of its 40th anniversary in Slavutych, Ukraine, Saturday, April 25, 2026. Chornobyl is the Ukrainian name for the city. (AP Photo/Dan Bashakov)

A man dressed in white protective suits holds a candle during a memorial service dedicated to firefighters and workers who died after the 1986 Chornobyl (Chernobyl) nuclear disaster, ahead of its 40th anniversary in Slavutych, Ukraine, Saturday, April 25, 2026.Chornobyl is the Ukrainian name for the city. (AP Photo/Dan Bashakov)

Minnesota Timberwolves guard Donte DiVincenzo (0) is helped off the court after sustaining an injury during the first half of Game 4 of a first-round NBA basketball playoff series against the Denver Nuggets, Saturday, April 25, 2026, in Minneapolis. (AP Photo/Abbie Parr)

A man stands at a balcony of a residential building damaged by a Russian strike on Dnipro, Ukraine, Saturday, April 25, 2026. (AP Photo/Mykola Synelnykov)

Rescue workers clear the rubble of a residential building destroyed by a Russian strike, in Dnipro, Ukraine, Saturday, April 25, 2026. (AP Photo/Mykola Synelnykov)