Veteran German journalist Jurgen Todenhofer, the first to gain access with Islamic State (ISIS) as an embedded reporter, revealed in a new book that the jihadist terror group plans nothing less than global nuclear annihilation.

Todenhofer, 75, was previously an MP in German Chancellor Angela Merkel's party before becoming a war reporter in 2000. He was embedded with ISIS for ten days, and overseen by "Jihadi John," the ISIS terrorist from the UK who is infamous for his beheading videos.

Israel National News reports that in his new book Inside IS - Ten Days in the Islamic State, Todenhofer writes that ISIS intends to gain access to nuclear weapons and they "plan on killing several hundred million people. The West is drastically underestimating the power of ISIS." He calls the group a "nuclear tsunami preparing the largest religious cleansing in history."

Describing how he got exclusive access to ISIS, Todenhofer discusses his intense negotiations with "the leadership of the Caliphate, via Skype, over several months, hammering out the security details." The journalist was not optimistic that he would return:

"Of course I'd seen the terrible, brutal beheading videos and it was of course after seeing this in the last few months that caused me the greatest concern in my negotiations to ensure how I can avoid this. Anyway, I made my will before I left."

"They now control land greater in size than the United Kingdom and are supported by an almost ecstatic enthusiasm the like of which I've never encountered before in a war zone. Every day hundreds of willing fighters from all over the world come."

"They are the most brutal and most dangerous enemy I have ever seen in my life. I don't see anyone who has a real chance to stop them. Only Arabs can stop IS. I came back very pessimistic."