2012/08/27 Headlines: Hurricane Warning in Effect for Northern Gulf Coast; Isaac Strikes Haiti, Forces Cancellation of RNC's First Day; Syrian Forces Accused of Killing Over 300 Near Damascus; U.S. Arms Sales Triple to Record $66.3 Billion; U.K. Withdraws Threat to Storm Ecuadorean Embassy; Oil Refinery Explosion Kills 39 in Venezuela; Israel Blocks West Bank Entry of 100 Foreign Activists; 2 Pussy Riot Members Flee Russia After Bandmates' Sentences; Romney Invokes "Birther" Controversy with Dig at Obama; NYC Police Wound 9 After Deadly Shootout; Texas Judge Warns of Civil War if Obama Re-elected; Hundreds Rally in Joplin to Support Burnt Mosque; Former U.S. Astronaut Neil Armstrong Dies at 82;$