Russia and the United States have both used thermobaric weapons in previous conflicts and have been in a decades-long race to refine the artillery, but Russia's alleged deployment of the so-called ...

A thermobaric munition, also known as a vacuum bomb, disperses an aerosol cloud of explosive material and then ignites it, causing a large fireball and a devastating blast wave while sucking out ...

He said that the explosive payload has grown from 40 kilograms (90 pounds) to 90 kilograms (nearly 200 pounds). "Accordingly, the destructive force is much greater," he said.