Confronted by new restrictions on the use of a critical air base in Uzbekistan, the U.S. military has shifted key operations out of the Central Asian republic, repositioning search-and-rescue planes in Afghanistan and routing heavy cargo flights through neighboring Kyrgyzstan, U.S. officials said yesterday. The moves amount to little more than an inconvenience so far, the officials said, but could become more problematic if Uzbek authorities refuse to restore freer access to the airfield later this year.Full Story