Israel's military assumes that there are up to 3,000 combat-ready members of Hamas in the city of Gaza. In total, the terrorist organization still has 16,000 to 18,000 fighters. "However, there is currently no longer any organized 'military' resistance by Hamas in the Gaza Strip. The terrorists sometimes attack an Israeli tank with a rocket, sometimes they lay a booby trap," Hans-Jakob Schindler, Senior Director of the Berlin-based think tank Counter Extremism Project, told our editorial team. "In the beginning, Hamas still had real combat units, a kind of army with an estimated 30,000 to 40,000 soldiers. Now it operates with cells that lure Israeli soldiers into an ambush and then retreat again. Parts of the underground tunnel system still exist as escape routes."