Given 9/11, it’s pretty unbelievable that support for the war in Iraq has fallen so fast:

The three most significant US wars since 1945 – Korea, Vietnam, and now Iraq – share an important trait: As casualties mounted, American public support declined.

In the two Asian wars, that decline proved irreversible. With Iraq, the additional bad news for President Bush is that support for the war in Iraq has eroded more quickly than it did in those two conflicts.

This graphic from the article sums it all up: