Baitullah Mehsud's Pakistani Taliban group has warned officials in the tribal northwest province of severe attacks if their military operations don't stop.Maulvi Umar, a spokesman for the Tehreek-i-Taliban Pakistan, told reporters by telephone from an undisclosed location the local government must end its military campaign in Hangu, Swat and other areas in the region, the Pakistani English-language newspaper Dawn reported Wednesday.His threat of violence came after the expiration of a five-day deadline issued by Mehsud asking the provincial government to resign, the report said. The ultimatum has been rejected by the government. ...