The end of February is considered the end of the optimal time to conduct a war, especially wearing space suits.
Remember that Turkey waffled for some time before finally turning us down, so we've had to re-deploy some assets and probably have had to change war plans significantly from a two-front to a one-front war. That kind of change isn't carried out overnight. Bush is dabbling with the UN, IMO, because the pieces aren't quite in place yet. If he fails to move by early April, then I'll join you in questionining what the heck is up. But there have been sufficient events to explain the delay.