Some Republicans in the Senate were actually challenging Petraeus today, according to Reuters:
The top U.S. commander in Iraq, Gen. David Petraeus, faced a tough challenge on Tuesday from both Republicans skeptical about war strategy and Democrats who want a swifter withdrawal of American troops
The bipartisan grilling of Petraeus and U.S. ambassador to Baghdad Ryan Crocker in Congress raised questions about whether President George W. Bush could count on enough of his Republican colleagues for help in staving off Democratic demands for a faster pullout.
Bush is expected to give a speech later this week on Iraq but has shown no signs of ordering drastic troop withdrawals.
Petraeus insisted progress was being made under Bush strategy of temporarily building up troops this year to allow time for political reconciliation, an approach which is being strongly challenged in Washington.
Now, as we've seen with these Republicans many times, they talk tough for awhile, then fall right into line with George Bush. But, clearly, they are worried.