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. U.S. forces faced leaving the airbase by late August 2009. Major U.S. concerns included working out alternative logistics routes and support functions for a surge in U.S. and NATO operations in Afghanistan and possibly cooler security ties with Kyrgyzstan that could set back U.S. counter-terrorism efforts and other U.S. interests in Central Asia. After reportedly intense negotiations, the United States and Kyrgyzstan reached agreement in June 2009 on modalities for maintaining U.S. and NATO transit operations at Manas.