A growing majority of Americans believe the war in Iraq is justified even if the United States does not find weapons of mass destruction. At the same time, public optimism about the progress of the fighting has surged as recent gains on the battlefield have eased fears that the allies will become bogged down in a long and costly war, according to a new Washington Post-ABC News poll. The survey found that more than nine out of 10 Americans believe the war is going well. Nearly half -- 47 percent -- said the conflict is going "very well," up 13...