The story

The top U.S. officials in Iraq told Senate committees Tuesday that Iranian agents and weapons are fueling the ongoing strife there and that further U.S. troop withdrawals will have to wait.

Gen. David Petraeus, the commander of U.S. troops in Iraq, and U.S. Ambassador to Iraq Ryan Crocker spent about nine hours giving the Senate Armed Services and Foreign Relations committees their assessments of the 5-year-old war.

Petraeus said that in the seven months since their last appearance before Congress, U.S. and Iraqi forces have made progress toward tamping down the violence but that progress was "fragile" and "reversible." Read full article »

CNN's Charley Keyes contributed to this report.

All About Ryan CrockerMuqtada al-SadrIraqDavid Petraeus

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