Washington (CNN) -- The State Department has evacuated most of its diplomats from Lahore, Pakistan in response to a terrorist threat against the U.S. consulate, senior State Department and other senior U.S. officials told CNN. "We have picked up what we regard as a threat worthy of taking this action," one senior U.S. official told CNN. The State Department issued an "orderged departure" for all of its diplomats in Lahore Thursday, except for a handful of emergency personnel. The diplomats were moved to Islamabad, the nation's capital, officials said. A travel warning issued by the State Department said the department...