Sheik Muqtada al-Sadr, the fiery Iraqi Shi'ite cleric who ordered his fanatical militia to attack coalition troops, is being supported by Iran and its terror surrogate Hezbollah, according to military sources with access to recent intelligence reports.

Sheik al-Sadr's bid to spark a widespread uprising in Iraq comes at a particularly pivotal time. The United States is conducting a massive troop rotation that leaves inexperienced troops in some locations, including Fallujah, which is west of Baghdad and where Sunnis have mounted another series of rebellions...