I thank my hon. Friend for her perceptive question, which sadly goes to the heart of the situation. This is another conflict in the region being fought out over people who ill deserve it, where the issues between regional powers have brought them into direct confrontation. She is right to say that the sophistication of the missile launched at the Saudi equivalent of Heathrow takes the conflict into a different sphere. Had that missile landed on the airport and destroyed civilian airliners carrying passengers from all over the world, perhaps including the United Kingdom, we would be facing a still greater crisis. My hon. Friend is right to say that our actions are seen in relation not only to this conflict, but to a wider issue of legitimacy and those who seek to disrupt it. That is why we need to bend all our efforts first on the humanitarian side, and secondly on making sure that the political negotiations and solution improve the regional situation, rather than make it worse.