Why is Landrieu invested in America's defeat in Iraq?

The U.S. Senate defeated a measure that would have mandated withdrawal of troops from Iraq by the end of August, 2008. Aside from the questionable constitutionality of this measure, voting on the measure tells us what various members of the Senate believe.

Note that Democrat Sen. Mary Landrieu voted in favor of this. By doing so, Landrieu signals to Louisiana voters that she believes in the following:

That the overwhelming economic power, superior training and abilities, and will of the American military backed by its people and politicians cannot defeat irregular forces haphazardly reinforced and supplied by America’s enemies

That democracy is not worth saving in Iraq, where the establishment of a stable democracy will present a model for the Arab world that they do not have to live under despots ranging from benevolent to virulent, the establishment of which will encourage the mutation of regimes varying from cautious cooperative to outright inimical to U.S. interests to those with common cause with America

That she is willing to tolerate, by increasing the chances that the current Iraqi government will not survive by a withdrawal of U.S. military forces its dismantling and radicalization into a regime hostile to the U.S. and Western values of democracy, moderation, tolerance, freedom and equality that will prove as great a threat, and probably greater, to America than under its previous authoritarian system

Landrieu either does not understand or has no desire to comprehend that setting a timetable for withdrawal signals to the opposition that the U.S. lacks the will to carry out a vital act of increasing its own security and self-preservation. Anything short of withdrawal only when U.S. interests are secure – and only the ignorant or disingenuous do not admit America fully has the means to insure this if it wants to – concedes defeat and leaves the U.S. in a worse position than it was years ago.

What Landrieu’s opponents in 2008 must ask her during her reelection campaign is whether she is just stupid, or why does she want America to lose the war and make Louisianans less secure? If the latter, why does she invest herself in defeat of America? What is it about America, and Louisiana, that she finds so appalling that she wants to see her own country harmed? These questions deserve a response from her.