SHOCK VIDEO: Go Inside The ISIS Terror Weapons Lab

From a “jihadi university” in the Syrian city of Raqqa, the scientists have stunned western weapons experts by producing a homemade thermal battery for surface-to-air missiles. It had been regarded as a virtually impossible feat for terror groups working without a military infrastructure. But footage exclusively obtained by Sky News shows that IS can now recommission thousands of missiles assumed by western governments to have been redundant through old age.