Russia-Ukraine War: How dangerous is ‘vacuum bomb’ that Ukraine says Russia is using?

Ukraine's ambassador and human rights groups have accused Russia of using cluster & vacuum bombs to attack Ukraine both of which have been condemned by various international organizations, Reuters reported.

These bombs are considered to be the most dangerous non-nuclear weapons. A vacuum bomb, or thermobaric weapon, sucks in oxygen from the surrounding air to generate a high-temperature explosion, typically producing a blast wave of a significantly longer duration than that of a conventional explosive and is capable of vaporizing human bodies. Meanwhile, Cluster munitions are a type of weapon meant to break open in the air and scatter smaller explosives or submunitions over a wide area.