U.S. military commanders said Friday the troop buildup in Iraq must be maintained until at least next summer and they may need as long as two years to ensure parts of the country are stable. "It's going to take through summer, into the fall, to defeat the extremists in my battle space, and it's going to take me into next spring and summer to generate this sustained security presence," said Maj. Gen. Rick Lynch, who commands U.S. forces south of Baghdad.
