Overview: 2011/10/18 Headlines: Israeli Soldier Gilad Shalit Released in Exchange for Hundreds of Palestinian Prisoners; Poll: Most New York City Voters Want Occupy Wall Street Encampment to Remain; Greece: Two Main Unions Prepare to Launch 48-Hour General Strike; U.S. Accused of Killing 16-Year-Old American Citizen in Yemen Drone Strike; U.S. Considered Cyber Attack Before Bombing Libya; Syria: At Least 25 Killed, Medical Workers Report Harassment; Iraq Withdrawal Creates Rift Between White House, Pentagon; U.S. Supreme Court to Decide if Firms Can Be Held Liable for International Human Rights Violations; Republican Presidential Hopeful Emerges as Financial Industry Candidate of Choice; Iowa Republican Caucus to be Held on Jan. 3; Questions Remain Surrounding CIA Operative's Role in <span class="caps">NYPD