2010/09/22 Headlines: Senate GOP Blocks Vote on Repealing Military Gay Ban; Summers to Resign as Top Economic Adviser; Book: Top US Officials Doubt Afghan War Strategy; NATO Arrests 2 Al Jazeera Journalists in Afghanistan; US Drone Strikes Kill 28 in Pakistan; Pakistani FM: Flooding Poses Crisis of "Biblical Proportions"; 10 Killed in Iran Bombing; Ahmadinejad: Capitalism Coming to End; Palestinian Killed, 5 Wounded in Jerusalem Clashes; Toronto G20 Protest Leader Arrested for Panel Appearance; ACLU Sues Pittsburgh Police over 2009 G20 Arrests; Carter Retracts "Superior" Comment on Post-White House Record; Scientists: Record Heat Endangers World's Coral Reefs