He tripped over the red line

Commentary marvels at the story of how President Obama added a "red line" to the Syria situation.
This would seem to be more evidence that the Obama presidency is in trouble. That “senior officials” in the White House are willing to talk under a cloak of anonymity about how the president blew it diplomatically and for the most liberal major newspaper in the country to make a big deal of it is not good news for the president.