The war in Iraq has entered its fifth year with the U.S.-led forces battling a determined insurgency and hoping to quell rising sectarian violence. More than 20,000 U.S. troops are headed to the region to help implement a new security plan and reconstruction efforts. Meanwhile, the near-daily bombings and casualties are taking a toll on support for the war on the home front.
With the election season and a key Iraq war progress report perched on the horizon, more Republicans will start to distance themselves from President Bush's Iraq policy, analysts say. 
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