Last summer, the SCO's six members -- China, Russia, and four Central Asian republics -- called for Washington to set a date by which to withdraw from military bases in Central Asia. The U.S. military has maintained an air base in Kyrgyzstan since 2001 as part of its operations in Afghanistan.
The upcoming summit, to be held on June 15 in China, will be attended by Iranian President Mahmud Ahmadinejad, Iranian media reported on June 8. The SCO has granted Iran observer status.
(dpa, AP, AFP, IRNA)