A-bomb survivors in Japan, outraged by Russia’s invasion of Ukraine, are becoming increasingly enraged over Moscow’s implied threats to use nuclear arms, with Russian remarks even prompting some politicians in Japan to float the idea of sharing American nuclear weapons.

Russian President Vladimir Putin’s move on Sunday to place his country's nuclear deterrent forces on high alert, has drawn strong criticism from hibakusha in Japan.

On Friday, concern rose after Russian troops attacked a Ukrainian nuclear power plant, which started a fire at the facility — the largest nuclear plant in Europe. The fire was extinguished and Ukraine authorities reported that no immediate radiation level increase was detected.