In February 2009, Kyrgyzstan announced that it was terminating an agreement permitting U.S. forces to upgrade and use portions of the Manas international airport near the capital of Bishkek to support coalition military operations in Afghanistan. If Kyrgyzstan does not reconsider its decision, U.S. forces have until late August 2009 to leave the airbase. Major U.S. concerns include working out alternative logistics routes and support functions for a planned surge in U.S. and NATO operations in Afghanistan. Possibly cooler security ties with Kyrgyzstan also could set back U.S.