It increasingly appears as if the Russian Metrojet airbus that crashed in the Sinai with the loss of 224 lives on October 31 may have broken up in flight. ISIS has claimed responsibility for the crash, saying that it destroyed the plane, presumably with a missile. It is not generally believed that ISIS possesses missiles with enough range to reach a plane flying at 33,000 feet. There aren't any readily available man-launched missiles capable of reaching a plane flying that high, but a number of heavier systems, some light enough to be carried in a pickup truck, could do it.
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