Sponge bombs: How Israel plans to tackle Hamas ‘terror metro’

Israeli forces are facing a formidable challenge in the form of the Hamas ‘terror metro’, a network of tunnels used by Hamas fighters in Gaza. The tunnels are hidden underground, full of traps, and heavily reinforced with concrete. US officials have warned Israel of the difficulties in breaching the tunnels and the likelihood of suffering casualties. Recognizing the need for an efficient solution, Israel is testing ‘sponge bombs’ that use a chemical reaction to seal off tunnel openings. These bombs could prevent ambushes and secure the tunnels during ground invasions.