In order to strengthen his case for the bombing of Isis forces in Syria to be debated in in the Housee of Commons next week. David Cameron is now suggeesting that Abu Bakr al-Baghdadi is after gaining nuclear weapons.
Of course, if offered to them, Isis wouldn’t turn down a ready-to-use tactical (miniaturised) nuclear weapon. But the only known sources would be the American and Israel governments — with perhaps weapons developed in China or Russia also. No chance from any of those!