Gergen: Obama Drew Red Line 'Without Knowing What He Was Going To Do Next' DAVID GERGEN: I respectfully disagree that the red line is a distraction. Once the President of the United States draws a red line, it becomes important to the world. Everybody else reads in to how he responds to a red line; Is he serious about Iran? Is he not serious about Iran? He's drawn a red line on Iran. If he doesn't respect his own red line on Syria, there is no question that Israel and Iran will look at that and say, "Well, we can't trust the guy."NORAH O'DONNELL: Even if we cross the red line it's not clear we're going to do anything further.GERGEN: ...He said it will be a game changer. Why did he draw the red line without knowing what he was going to do next?