They fire rockets and mortar shells from within heavily-populated areas, and Israerl is afraid to attack the sources of fire, for fear of harming civilians and bringing on herself scathing world condemnation, a la Goldstone, only worse. So we're going to have to put up with occasional outbursts of missiles and mortars from Gaza, suffer injuries and perhaps deaths, damage to property and so on. We're often accused of being fascist. Well, maybe that's the solution.
EU's Mogherini in Tehran to talk nuclear deal, regional issues (Reuters)
from the article: More than 70 rockets and mortars hit south Israel, three wounded