REUTERS

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, Sky News reports.

IS can now recommission thousands of missiles assumed by western governments to have been redundant through old age, the report says.

Read alsoIslamic State has "revolutionized" terrorism, FBI director saysHeat-seeking warheads can be used to attack passenger and military aircraft. They are 99% accurate once locked on.

Видео дня

The IS research and development team has produced fully working remote controlled cars to act as mobile bombs, while they have fitted the cars with "drivers"; mannequins with self-regulating thermostats to produce the heat signature of humans, allowing the car bombs to evade sophisticated scanning machines that protect military and government buildings in the West.

The group trained fighters from a variety of countries to carry out attacks and to train more jihadists in their own countries.