Russia's Shoigu warns of 'uncontrolled escalation' in Ukraine conflict

Russia's Defense Minister Sergei Shoigu said the situation in Ukraine was deteriorating, leaning to "uncontrolled escalation" in a phone call with the French Defense Minister.

"They discussed the situation in Ukraine which is rapidly deteriorating," the defense ministry said in a readout of the call. "It is trending towards further uncontrolled escalation."

A so-called dirty bomb uses conventional explosives laced with radioactive material.