anti-aircraft missiles should the u.s. and allies try to put in place a no-fly zone. no, the ball was not moved today. thank you. as world leaders grapple with the idea of arming syria s rebels, we have disturbing new details about al qaeda s involvement in syria. they may have at many as 10,000 supporters inside syria and one source said they are making desperate attempting to gain chemical weapons. fr fred frederik pleitgen has our report. reporter: the government is starting pushes to get back.