The possibility of the Russia-Ukraine war escalating into a nuclear conflict has gained some credibility after a devastating drone attack struck Ukraine’s Chernobyl nuclear reactor. The attack damaged sections of the reactor’s protective walls, according to the United Nations' International Atomic Energy Agency (IAEA). The incident also caused a fire within the reactor. The IAEA described this as the most severe accident in Chernobyl’s history since the 1986 disaster. Ukraine has blamed Russia for the attack, but Moscow has denied any involvement.