The Islamic State (IS), an extremist group based in Syria and Iraq which declared a "caliphate" or Islamic State in the region, boasts of home grown recruits from many corners of the world.
The most highly visible Western recruits - often seen in violent propaganda video clips on the internet - seem on the whole, to come from the UK.
The sheer number of IS recruits from the UK is higher than from Finland. Haras Rafiq, managing director of the British counter-extremism think tank Quilliam Foundation said that per capita, there are three times more IS recruits coming from Finland.
Today there are about 2.8 million Muslims in the UK, with about 500 of them known to have joined the IS. In Finland, there are some 60,000 Muslims, of which approximately 40 have joined the IS in Syria and Iraq.
"[Finland] is one of the biggest problem areas in Europe," Rafiq said. "In Finland, the proportion of combatants in the Muslim population is more than three times higher than in Britain."
"There seems to be something going on in Scandinavian countries, and I think it’s been the reluctance to actually identify and confront hate preachers," Rafiq said. "Actually sometimes I think that hate preachers and people who would purvey these messages towards Islamism is normative Islam, which it really isn't."
Rafiq said he believes that recruitment to radical Islamic groups must be combated by challenging the extremist views in online social media and forums.
"For every person that puts up a viewpoint which is leading to radicalisation, we need 20 people to counter those ideas and views, from intellectual, social, emotional and spiritual perspectives," Rafiq said.
According to its website, Quilliam is "the world’s first counter-extremism think tank set up to address the unique challenges of citizenship, identity, and belonging in a globalised world."