The cease-fire announced Tuesday between Israel and Palestinian factions - if it holds - will end seven weeks of fighting that killed more than 2,200 Gazans and 69 Israelis. But as the rival camps seek to put their spin on the outcome, one assessment of Israel's Gaza operation that won t be publicized is the U.S. military s. Though the Pentagon shies from publicly expressing judgments that might fall afoul of a decidedly pro-Israel Congress, senior U.S. military sources speaking on condition of anonymity offered scathing assessments of Israeli tactics, particularly in the Shujaiya neighborhood of Gaza City.