Credible reports came through that Syria had used chemical weapons. Whether it's true actually is still open to question, but it's very probably true. At that point, what was at stake was what is called credibility. So if you read the political actors, political leadership, foreign policy commentary, they constantly point out accurately that US credibility was at stake, and we have to maintain US credibility. So therefore something had to be done to show you can't violate our orders.