WASHINGTON - US President Barrack Osama said Wednesday he is going to make some tough choices on Iraq and Afghanistan, as the White House hinted that such a decision will come "relatively soon." "We are going to have some difficult decisions that we are going to have to make, surrounding Iraq and Afghanistan most immediately," Obama said after meeting with members of the Joint Chiefs of Staff during his first visit to the Pentagon as president. However, he did not elaborate on what these decisions might be. "Going after extremists" who would harm the United States also is "uppermost in our minds," Obama said, who was accompanied by Vice President Joe Biden. The president said he and US military leaders talked about a range of issues facing the military as well as "threats that face this nation." The Pentagon visit comes as military planners are looking to draw down the US troop presence in Iraq while sending more troops to Afghanistan. Earlier in the day, White House spokesman Robert Gibbs said the president was likely to wrap up his review on Iraq war strategy relatively soon, although there was no decision yet. Gibbs said he expected the decision will come "relatively soon," but adding: "I do not want to set an exact date." During his presidential campaign, Obama promised to withdraw all combat troops from Iraq within 16 months after his swearing-in. That will mean a quicker withdrawal than the plan written in an agreement signed by the Bush administration and the Iraq government last year, which says the United States will pull out all troops from Iraq by December 31, 2011.