Pakistan prepared Saturday to launch a military operation against Taliban militants who have threatened the main city in the country's volatile northwest, the army spokesman said. Maj. Gen. Athar Abbas told The Associated Press the army was readying the paramilitary Frontier Corps to target militants in the Khyber tribal region next to Peshawar. Khyber is also a key route for US military supplies into neighboring Afghanistan. "The operation is imminent," Abbas said. He declined to give further details, citing operational security.