UK is afraid I will come back with the skills I’ve gained: Chilling tweet of British jihadist fighting in Syria

He left his family to train with extremists in Syria.
Now British jihadist Nasser Muthana has threatened to use his terror ‘skills’ when he returns to the UK.
In a chilling online message, the 20-year-old unveiled a photograph of what is thought to be a collection of improvised explosive devices or IEDs. Underneath the image, he wrote: ‘So the UK is afraid I come back with the skills I’ve gained.
He also wrote about decapitating his enemies alongside a picture of a chain-like weapon.
Muthana was exposed as a terrorist in training after he appeared in a recruitment video for insurgent group ISIS, devastating the family he left behind in Cardiff.
Formerly a prospective medical student, he was joined in Syria by his younger brother Aseel, 17, who has now spoken of his willingness to die fighting.