Ukraine says they killed general leading Russia's nuclear and chemical forces

Ukraine security sources tell CBS News they were behind an explosion in Moscow that killed Lt. General Igor Kirillov, the head of Russia's Nuclear, Biological and Chemical Defense forces. CBS News reporter Haley Ott has more.

Ukraine says they killed general leading Russia's nuclear and chemical forces
Ukraine security sources tell CBS News they were behind an explosion in Moscow that killed Lt. General Igor Kirillov, the head of Russia's Nuclear, Biological and Chemical Defense forces. CBS News reporter Haley Ott has more.