2012/08/03 Headlines: Annan Steps Down from Syria Mission; Rebels Claim Gains in Aleppo; North Korea Seeks Food Aid After Major Floods; Obama: GOP Tax Plan Favoring the Wealthy is "Trickle-Down Fairy Dust"; Romney Suggests Outsourcing Experience Will Help Him Win Back U.S. Jobs; U.S. Shuts Down Tennessee Uranium Facility After Anti-Nuclear Protesters Infiltrate; Senate Defeats Revised Cybersecurity Bill; U.S. to Oppose U.N. Regulation of Internet; Psychiatrist Reportedly Warned School on Aurora Shooting Suspect; African-American Man Shot Dead While Handcuffed in Police Vehicle;$