Mustafa Abdel Jalil (right) and Mahmud Jibril of the Libyan National Transitional Council in Paris on September 1. Tripoli, Libya (CNN) -- Libya's interim leadership gave Moammar Gadhafi loyalists one more week to surrender before they face military force in the last bastions of the strongman's power. But with the olive branch came a threat. Anti-Gadhafi forces are positioning around the former leader's hometown, Sirte, and Bani Walid, where a powerful tribe is sympathetic to Gadhafi, Mustafa Abdul Jalil, chairman of the National Transitional Council, said Saturday. "This extension does not mean we are unaware of what Gadhafi's accomplices are...