British Prime Minister David Cameron
British Prime Minister David Cameron Reuters

Conspiracy theories of a powerful Jewish cabal or a Western plan to destroy Islam must be challenged in efforts to counter radicalization, British Prime Minister David Cameron will say on Monday, AFP reports.

The remarks will come in a speech in the central English city of Birmingham, in which Cameron is to announce a five-year plan to tackle home-grown Islamic extremism and help communities integrate in Britain.

"You don't have to support violence to subscribe to certain intolerant ideas which create a climate in which extremists can flourish," Cameron is to say, according to remarks released Sunday night.

"Ideas also based on conspiracy that Jews exercise malevolent power or that Western powers, in concert with Israel, are deliberately humiliating Muslims, because they aim to destroy Islam," Cameron will say.

He is also to attack views that hold poverty and Western foreign policy responsible for terrorism.

"This argument, the grievance justification, must be challenged," Cameron will say.

The prime minister's center-right Conservative government has sought to address radicalization since Cameron won a second five-year term in office in May.

Uncomfortable questions have been raised by waves of people who have left Britain to join the Islamic State (ISIS) group, which has brutally carved out regions of control in Iraq and Syria, and Cameron is to say that past integration policies failed.

"For all our successes as (a) multi-racial, multi-faith democracy, we have to confront a tragic truth that there are people born and raised in this country who don't really identify with Britain - and feel little or no attachment to other people here," Cameron is to say, according to AFP.

"When groups like [ISIS] seek to rally our young people to their poisonous cause, it can offer them a sense of belonging that they can lack here at home, leaving them more susceptible to radicalization and even violence against other British people."

In response, the prime minister is to announce a review into how to increase opportunities for young people from minority backgrounds, help people learn English and promote integration in isolated and deprived communities in Britain, according to a statement by Cameron's office.

The prime minister vowed a "full spectrum" response to the killing of 30 British tourists in a Tunisian gun attack claimed by ISIS last month. Even as far back as November, the British leader outlined plans to seize passports from radicalized Britons and stop them returning from fighting overseas.

Radicalization in Europe has become a growing concern, and the danger from it was illustrated in October, when a four-man ISIS terror cell was busted by police before apparently planning to behead one or several Britons on the streets of London.

In November, two brothers became the first Britons to be jailed for terrorism training in Syria, after they had admitted conspiracy to attend a terrorism training camp in 2013.

A month later, a British mother of six who hoped one of her sons would become a jihadist was jailed for five years and three months after she used social media to encourage acts of terror in Syria.

Cameron has also indicated he may seek to increase Britain's role in fighting ISIS, potentially seeking another parliamentary vote on whether to conduct air strikes in Syria, a proposal which was voted down in 2013.

He has in the past expressed concern over the rise of "a new anti-Semitism" in the United Kingdom. 

"The Jewish community in Britain makes an incredibly important contribution to our country," Cameron told the Atlantic in April. "It is so well-integrated into every part of life."

"What is frightening at the moment, because of the rise of Islamist extremism, is that you see a new threat - a new anti-Semitism - and not the traditional anti-Semitism," he continued. "Look, there’s always been some difficulties between religions in European history. But this is a new scale of threat against Jewish communities."

Cameron’s comments, made before the elections in his country, came after the European Jewish Congress released a damning report revealing a spike in anti-Semitism throughout Europe, with the UK leading the way for the most anti-Semitic countries. 

AFP contributed to this report.