AnalysisBy Gary Langer March 18 — Americans' support for war with Iraq and approval of President Bush's handling of the crisis both spiked Monday night, the kind of rally in public opinion that customarily accompanies the start of military action. In an ABCNEWS/Washington Post poll conducted after Bush set a two-day deadline for Saddam Hussein to leave the country, 71 percent say they would support war, up a dozen points from a week ago; and 64 percent approve of Bush's work on the confrontation with Iraq, the most in six months. Accompanying this support is a broad consensus that diplomacy...