President Obama and the 'red line' on Syria's chemical weapons - The Washington Post
Moving slowly across Obama's 'Red Line' on Syria - BBC News
Senate panel backs Syria attack; Obama defends chemical arms red line | CNN Politics
The President Blinked": Why Obama Changed Course on the "Red Line" in Syria | FRONTLINE
C4H10FO2P on Twitter: "#Obama's "Red Line" - Use of Poison Gas in #Syria - Failed #Trump's "Red Line" - Nuke Test in North #Korea - in processing.... https://t.co/sRennefDeX" / Twitter
Obama Was Right to Abandon 'Red Line' on Syria's Chemical Weapons
Obama's "Red Line" That Wasn't - YouTube
Obama's red line
Assessing "red lines" as Obama mulls Syria attack - CBS News
Obama red-lines himself into a corner on Syria | iPolitics
Gallery: Cartoonists interpret Obama's 'red line' on Syria – Orange County Register
Obama's 'red line' failure assured crisis in Syria | Opinions and Editorials | nola.com
Obama's red line lesson – Chicago Tribune
Obama's red line on Syria gets squiggly – Baltimore Sun
Obama: 'I didn't set a red line, the world set a red line'
Trump Blames Obama's Failure to Follow Through on 2013 'Red Line' for Russia, Iran's Control of Syria
23,000 Killed Is Not a Red Line - Political Violence at a Glance