Iraqis plan to vote on a new flag by the end of 2008.
Five years after the US invasion, some see flickers of hope.
American soldiers say the battle for the northern Iraqi city is a complicated mix of counterterrorism, economic incentives, and political solutions.
Al Qaeda-linked militants and Kurdish ultranationalists are both pressuring Iraq's largest Christian enclave.
American support in strike against PKK rebels threatens relations with key Iraqi allies.
Incoming US Gen. Jeffery Hammond plans to add US-Iraqi command outposts.