President Volodymyr Zelensky led Ukraine in a Sunday ceremony marking the 40th anniversary of the Chernobyl nuclear disaster, and used the occasion to call on the international community to take decisive action against what he called ongoing Russian “nuclear terrorism”.

There were various candlelight remembrance ceremonies in cities across Ukraine, and in the capital. Later echoing the statement on Telegram, Zelensky alleged the the Chernobyl site’s the New Safe Confinement structure – built with support from more than 40 countries – is under direct threat from Moscow’s aggression.

IAEA/X

The 1986 explosion and Chernobyl core meltdown is widely considered to be among the largest man-made disasters in human history. Zelensky has been hyping that another could be around the corner given Moscow’s latest actions.

“Russian-Iranian Shahed drones constantly fly over the station, and one of them hit the confinement last year,” Zelensky said, warning that another disaster could be imminent. 

“The world must not allow this nuclear terrorism to continue, and the best way is to force Russia to stop its reckless attacks,” he then emphasized.

He described that protecting the Chernobyl site serves global interests and that the only way to guarantee safety is to force Russia to “stop its mad attacks.”

The warning followed a major aerial assault on Saturday in which Russia launched over 660 missiles and drones at Ukraine, targeting cities and areas nationwide, including strikes on civilian infrastructure in Dnipro and Kharkiv.

Various international organizations say extreme danger for disaster persists, but Rosatom insists it has safety under control:

The head of the International Atomic Energy Agency (IAEA), Rafael Grossi, and Moldovan President Maia Sandu joined the commemorative events.

Commenting on damage to the shell, which the environmental group Greenpeace says raises the risk of a radioactive leak, Grossi said that “repairs should start as soon as possible and that leaving the situation as it is now is problematic.”

Any repairs to the massive metal outer structure, which may potentially take up to four years, are virtually impossible due to Russia’s invasion, according to Greenpeace.

Russia’s nuclear agency Rosatom, the successor of the Soviet atomic energy ministry, which managed the facility, said: “To remember Chernobyl means to remember the people who bore the brunt of the disaster, and to take that experience into account in every decision we make today, to prevent a similar catastrophe.”

There was a very alarming 2025 incident where an explosive drone hit the protective containment shell of the defunct Chernobyl plant. However, emergency crews were able to make it to the impact site on the immense roof and make repairs. Both the Ukrainian and Russian sides pointed the finger at the other for that attack.

Today marks 40 years since the Chernobyl disaster. On April 26, 1986, at 1:23 AM, a routine safety test spiraled into the worst nuclear disaster in history. pic.twitter.com/ioZFHTTNHh

— World of Engineering (@engineers_feed) April 26, 2026

Given that Chernobyl is a name that has captured popular imagination for decades since the apocalyptic historic disaster left the vicinity basically a radiation death zone, it could present the perfect false flag opportunity for anyone wishing to prolong and escalate the war – and nuclear officials have been keenly aware of this possibility.