British Prime Minister Keir Starmer was pictured aboard a submarine in a rare showcasing of the country's nuclear deterrent on the day international military planners meet in London to discuss a peacekeeping force to support Ukraine.

The fate of the Russian-occupied Zaporizhzhia nuclear power plant has been a concern since Moscow’s forces stormed the facility in March 2022.

The U.S. is seeking access to Ukrainian minerals, which require extensive energy to process. The Zaporizhzhia power plant in southern Ukraine, which Russia controls, could help with that, Kyiv says.