Overview: 2011/09/19 Headlines: Obama Proposes New "Buffett Tax" on Millionaires; Yemen Intensifies Government Crackdown with Scores Killed in 48 Hours; Report: U.S. Increases Drone Strikes in Yemen; Gaddafi Forces Claim Hundreds Killed in NATO Air Strike, Claim Capture of 17 European Mercenaries; Documents Reveal Former U.K. Prime Minister Visited Gaddafi Prior to Release of Lockerbie Bomber; U.S. Accuses Pakistani Government of Ties to Taliban-Linked Militants Blamed for Embassy Attack; United Nations Requests $350 Million in Flood Relief Aid for Pakistan; Former FBI Director Calls for Troy Davis Execution to be Put Off; Banking Giant UBS Loses $2.3 Billion in Unauthorized Trades; Book: Tim Geithner Ignored Presidential Order to Consider Dissolving Citigroup; Report: U.S. Cannot Account for Nearly Three Tons of Nuclear Material Shipped Overseas; Palestinian President Mahmoud Abbas Arrives in New York Vowing to Seek Full U.N. Membership; Britain's Largest Weapons Fair Promotes Sale of Illegal Torture Equipment, Cluster Bombs; WikiLeaks Cables Reveal U.S. Efforts to Defend Cluster Bombs Around the World; U.S. Hikers Remain Detained Following Religious Delegation's Visit to Iran; Brazil: Two Men Arrested in Connection with Amazon Environmentalist Murders