The most expensive aspect is defensive weapons, as it costs a small fortune to shoot down all the thousands of rockets and missiles that have continued to fly into Israel from Gaza, Iran, Yemen, Lebanon (Hezbollah),
Iron Dome saves more Palestinian lives than Israelis, because if all those rockets and missiles were effective in killing Israelis, Israel would have to be more aggressive and put a stop to it over night, which would be a genuine massacre of human shields.
