London Mayor Boris Johnson says ISIS terrorists’ problems ultimately trace back to their trouble with the ladies.

Citing an analysis by MI5, Johnson tells the Sun:

“If you look at all the psychological profiling about bombers, they typically will look at porn. They are literally w***ers. Severe onanists.

“They are tortured. They will be very badly adjusted in their relations with women, and that is a symptom of their feeling of being failures and that the world is against them.

“They are not making it with girls, and so they turn to other forms of spiritual comfort — which of course is no comfort.”

He also called out Muslim leaders for nothing doing enough to tamp down extremism.

Johnson says they’re too quick to scream “Islamophobia” and instead, Islamic leaders should be doing more to offer “a proper counter-narrative” to terrorism.

“But they are not explaining how it can be that this one religion seems to be leading people astray in so many cases.

“They are not being persuasive in the right way with these people. I am not yet hearing it in the way we need to hear it.”

The mayor visited Iraq last week to visit fighters battling against terrorist elements.

“The people most likely to get involved in IS or be radicalised are the same as those most vulnerable to getting dragged into drug gangs or other criminal activity,” Johnson tells the Sun.

“They are just young men in desperate need of self-esteem who do not have a particular mission in life, who feel that they are losers and this thing makes them feel strong — like winners.”

According to the Daily Mail, security officials believe more than 600 people from Britain have traveled to Syria and Iraq to join jihadists.

Foreign Secretary Philip Hammond says there is a “very high risk” returning fighters will commit terrorism in Britain.

Johnson, who is rumored to be in line to be the next prime minister, believes the West needs to defeat radical Islam in different ways.

“We won’t succeed if Western politicians go around bashing and blaming Islam — that is hopeless.

“This problem can only be addressed if Muslim authorities and clerics find a powerful and compelling way of setting up an alternative narrative for young people that makes this seem irrelevant.”