It is frequently a misfortune to have very brilliant men in charge of affairs. They expect too much of ordinary men.
-Thucydides

I ran across this qoute and think it aptly sums up what is going on between General Petraeus and Congress. Petraeus has a plan, rightly recognizes that it will take time for it to work, and actually expects to be given the time and resources he was promised when he took the job. He expects too much of the Congress.