An influential Muslim scholar has issued a global ruling against terrorism and suicide bombing.
Dr Tahir ul-Qadri, from Pakistan, says his 600-page judgement, known as a fatwa, completely dismantles al-Qaeda's violent ideology.
The scholar describes al-Qaeda as an "old evil with a new name" that has not been sufficiently challenged.
The scholar's movement is growing in the UK and has attracted the interest of policymakers and security chiefs.
In his religious ruling, delivered in London, Dr Qadri says that Islam forbids the massacre of innocent citizens and suicide bombings.