"The United States marks this anniversary with a pledge of an additional $10 million to help ensure the safety of future generations who live in the affected area," U.S. Assistant Secretary and Department Spokesperson for the Bureau of Public Affairs John Kirby said in a statement on Monday, April 25.

This pledge comes on top of the more than $400 million the U.S. has already committed to the international effort to help Ukraine restore the site of the accident to an environmentally safe and secure condition.

"As we reflect on the tragedy of Chornobyl, so too must we recognize the progress that has been made to complete a new confinement structure for the destroyed reactor, which should soon be moved into place," he said.

Read alsoDonors to allocate EUR 100 mln for confinement project at Chornobyl NPPThe structure is designed to protect the surrounding environment for the next 100 years and allow for the safe clean-up of Chornobyl.

"We look forward to continuing our work with the Ukrainian Government and our international partners to improve the lives of Ukrainians there and across Ukraine," he added.