Plot: 2011/08/16 Headlines: 89 Killed in Iraq's Deadliest Day of 2011; Death Toll from Syrian Assault on Latakia Hits 34; Rebels Advance on Tripoli amidst Talks in Neighboring Tunis; Obama Begins Midwest Bus Tour as Approval Rating Drops to New Low; Rick Perry Joins GOP Candidates on Campaign Trail; 1 Palestinian Killed, 5 Wounded in Israeli Bombings of Gaza Strip; Israel Approves New Settlements in West Bank; U. N