"There are disagreements that the strategy that Petraeus is following might succeed in confronting al-Qaida in the early period, but it will leave Iraq an armed nation, an armed society and militias," al-Suneid said.

Al-Suneid's comments were a rare show of frustration toward the Americans from within al-Maliki's inner circle as the prime minister struggles to overcome deep divisions between Shiite, Sunni and Kurdish members of his coalition and enact the U.S.-drawn list of benchmarks.

But the U.S. focus on the benchmarks has rankled the deep sense of Iraqi pride, even among those who share the goals set forth by the Americans.

U.S. forces have been waging intensified security crackdowns in Baghdad and areas to the north and south for nearly a month. The goal is to bring calm to the capital while al-Maliki enacts the political reforms, intended to give Sunni Arabs a greater role in the government and political process, lessening support for the insurgency.

But the benchmarks have been blocked by divisions among Shiite, Sunni and Kurdish leaders. In August, the parliament is taking a one-month vacation — a shorter break than the usual two months, but still enough to anger some in Congress who say lawmakers should push through reforms while American soldiers are dying.

Two more American soldiers were killed Saturday in bombings in the Baghdad area, the U.S. military reported. One of the bombs used was an explosively formed penetrator — high-tech devices that the U.S. military believes are smuggled from Iran. The Iranians deny the charge.

In other violence, a car bomb leveled a two-story apartment building and a suicide bomber plowed his explosives-packed vehicle into a line of cars at a gas station. The two attacks killed at least eight people, police said.

Also Saturday, the U.S. military said it captured an alleged high-level al-Qaida in Iraq cell leader at Baghdad's international airport. The suspect, believed to have organized mortar and roadside bomb attacks in the capital and nearby area, surrendered "without a struggle," the military said in a statement.

It did not give details on the suspect or say whether he was traveling in or out of the country when seized.

The Reuters news agency said one of its Iraqi translators was shot to death in Baghdad on Wednesday along with two of his brothers, apparent victims of sectarian death squads. He was the third employee of the news agency killed in Baghdad this week.

An Iraqi reporter for The New York Times, Khalid W. Hassan, was killed by gunmen Friday as he drove to work in southern Baghdad.