Brad, in a little footnote on the casualties issue, I just now saw this report of a poll.

An excerpt: "While 59 percent respondents say they would support a war in which 500 U.S. troops died, support falls to just 47 percent and opposition to the war rises to 41 percent if the U.S. death toll rises to 1,000.'

Just one poll, but an interesting suggestion of what support for the war hinges on.