Deadly accident at Russian military base caused by small nuclear reactor explosion

The failed missile test that ended in an explosion killing five scientists last week on Russia’s White Sea involved a small nuclear reactor, according to a top official at the institute where they worked. The institute is working on small-scale power sources that use “radioactive materials, including fissile and radioisotope materials,” for the Defense Ministry and civilian uses, Vyacheslav Soloviev, scientific director of the institute, said in a video shown by local TV.