'New, troubling developments' with Russia's nuclear arsenal -US official
The report comes as Russia accuses Ukraine of preparing to use a dirty bomb or even a nuclear bomb as Russia continues its invasion in Ukraine.
A Russian Yars intercontinental ballistic missile is launched during the exercises by nuclear forces in an unknown location in Russia, in this still image taken from video released February 19, 2022.(photo credit: Russian Defence Ministry/Handout via REUTERS)ByROMAN MEITAVUpdated: