From what I've seen, it was that chickenhawk Eric Cantor trumpeting the red line crap.
“The administration has confirmed that the Assad regime in Syria has crossed a dangerous, game-changing red line,” House Minority Leader Eric Cantor (R-Va.) said in a statement, which called on members to attend a classified briefing Friday morning."
http://www.washingtonpost.com/politi...y.html?hpid=z1
Edit- forgot to pin the chickenhawk appellation on that weasel, Cantor.