U.S. President Barack Obama on Friday met with U.S. and North Atlantic Treaty Organization (NATO) troop head in Afghanistan, General Stanley McChrystal. White House Press Secretary Robert Gibbs said that the meeting between the two took place on Air Force One in Copenhagen, where the President was rallying for a bid to have Chicago host the 2016 Olympic Games. The meeting lasted 25 minutes, Gibbs told reporters on the plane. McChrystal flew to Denmark from London, where he met with Prime Minister Gordon Brown Thursday, and delivered a stark assessment of the Afghanistan insurgency to military and defense experts at the International Institute of Strategic Studies. Gibbs declined to give details of the discussion between the president and McChrystal, which followed a high-level meeting on Wednesday in Washington between Obama and his top foreign policy advisers over the deteriorating situation in Afghanistan. The meeting comes as Obama is running a reassessment of the U.S. strategy in the war-torn country. McChrystal weeks ago also completed his assessment of the situation on the ground, which called for a greater U.S. troop presence-a request the administration has been avoiding to address. There are currently 68,000 U.S. forces there.