Prime Minister David Cameron is warning a new approach is needed to tackle terrorism, arguing that the government can no longer turn a blind eye to extremist ideologies.

Cameron is unveiling new plans to combat extremism on Monday, extending powers to seize passports from young people at risk of traveling abroad to join groups like the Islamic State and forcing those convicted of extremist offenses to register with authorities.

Britain has already been able to seize the passports of those under 16, but will now be able to seize the documents of 16- and 17-year-olds.

Cameron says an extra 5 million pounds ($7.7 million) will be ploughed into moderate Muslim groups and charities this year because "the stakes are rising."