Barack ObamaBarack Hussein ObamaGeorge W. Bush honors father at benefit for hurricane victims Dem senator: ‘I miss every one of’ our last 5 presidents All five living former presidents appear at hurricane relief benefit concert MORE says he is willing to "refine" his policies on withdrawing from Iraq after meeting with military commanders during his planned trip to Iraq later this month, The Caucus is reporting.

Obama has pledged to withdraw all combat troops from Iraq within 16 months of taking office, the plan outlined on his website.

"I