In the past weeks, Palestinian Arab towns and cities were the scenes of intense combat as Israeli forces fought to track down terrorists and destroy their hideouts and bomb factories. The vast stores of armaments, explosives and paraphernalia of suicide bombers, as well as the presence of the terrorists themselves, show that Israel was entirely justified in attacking these sources of terror. But in the aftermath of the fighting, the devastation of war has left many of the inhabitants of these places destitute and homeless. For those who think that Israel has no right to defend itself against terrorism, any...