There was an attack of Israeli AF this night over Syria. Probably it was an old S-200 missile that could not hit any manoeuvrable target and flew into nowhere. Why was not it blown up in mid-course, that's the question. However, this kind of accident already happened some 20 years ago when a Ukrainian S-200 missed a target during training and then hit Tu-154 flying from Israel to Russia. The distance was pretty long (some 250 km), longer than from west Syria to east Cyprus.