Barack Obama actually said...

Tonight, President Obama said the use of chemical weapons by Syria would be a game changer and a red line.

The president has said over and over again Assad must step down, in order for there to be a political resolution to this.

He said even without weapons of mass destruction, chemical weapons, sarin, 70,000 people have been killed.

What we now have is evidence that chemical weapons have been used inside of Syria, but we don't know how they were used, when they were used...