In at least one troublesome area of Iraq, the US military is shifting from peacekeeping and nationbuilding to the work it is designed and trained to do: fight wars.
Responding to attacks that have killed 150 of their brethren during the six-month occupation, American forces over the weekend adopted a more aggressive approach to the so-called "Sunni triangle" - the region north and west of Baghdad where most attacks against the occupation are occurring.
US authorities are wagering that security-starved Iraqis won't protest the crackdown in the triangle, a focal point of support for the otherwise widely hated former regime. Tikritis are particularly resented by the Iraqi public, since most of the top officials in Saddam Hussein's feared domestic security network were recruited from the area.
"The Americans should be stronger; they have to realize the criminals they are dealing with and treat them accordingly," says Rajha Flayh, a woman shopping in Baghad's Kadhimiya Shiite district. "Everybody I know is hungry for security."
So far the approach is having the desired effect. Soldiers at the 4th Infantry Division headquarters in Tikrit say nightly mortar attacks against them have stopped since Friday night.
"What a show of force does is establish that we will not tolerate attacks ... from anyone who is trying to keep Iraq in its past,'' says Maj. Josslyn Aberle, spokeswoman for the 4th Infantry, which oversees military operations in the triangle. "Eventually, they're going to realize that they're bringing nothing but trouble to their families and their tribes."
But some Iraqis say the harsh tactics could backfire - especially in communities like Tikrit, Hussein's hometown of 400,000 that was transformed from one of Iraq's poorest to one of its richest under his rule.
"The Americans' tactics are going to breed an even bigger reaction against them,'' says Ali Malik, a police major in Tikrit. "Everyone in this town loved Saddam. Their patrols just make things worse. I have a 3-year old son, and even he spits and throws rocks when they drive past now."