What are cluster bombs and thermobaric weapons?

GS Paper 3: Topics Covered: Disaster management.   Context: Russia has resorted to the use of dangerous thermobaric bombs — or vacuum bombs — in Ukraine. Cluster weaponry has been banned by the 2008 Convention on Cluster Munitions; however, neither Ukraine nor Russia were signatories at the convention.   Thermobaric weapons: These are called vacuum …