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Caption:	 US President Barack Obama answers a question on Syria during a joing press conference with Swedish Prime Minister after their bilateral meeting at the Rosenbad Building in Stockholm on September 4, 2013. Obama met with Fredrik Reinfeldt upon arrival in Sweden on a two-day official trip before leaving for Russia, where he will attend G20 summit. Russia on Thursday hosts the G20 summit hoping to push forward an agenda to stimulate growth but with world leaders distracted by divisions on the prospect of US-led military action in Syria. AFP PHOTO / JEWEL SAMAD (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
Caption:	 US President Barack Obama answers a question on Syria during a joing press conference with Swedish Prime Minister after their bilateral meeting at the Rosenbad Building in Stockholm on September 4, 2013. Obama met with Fredrik Reinfeldt upon arrival in Sweden on a two-day official trip before leaving for Russia, where he will attend G20 summit. Russia on Thursday hosts the G20 summit hoping to push forward an agenda to stimulate growth but with world leaders distracted by divisions on the prospect of US-led military action in Syria. AFP PHOTO / JEWEL SAMAD (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

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Obama: 'I didn't set a red line'

Pres. Obama says a "red line" was crossed when Syria used chemical weapons, a comment he also referred to in the past.

Obama: 'I didn't set a red line'

Pres. Obama says a "red line" was crossed when Syria used chemical weapons, a comment he also referred to in the past.