This roadmap, Sharon plan, etc. is basically a way for the US to try to calm the Europeans and Arabs who are mad about US action against terror in Iraq. On the one hand the US is determined to eliminate terrorism, and on the other determined to give terror a new country.
We are dividing the terrorists up and crushing one group at a time. First in Afghanistan, then in Iraq, then elsewhere and so on.
I understand your impatience. I understand your reluctance to engage in strategies that appear to give short-term rewards to the enemy, too.
But there is a larger plan going on here.