According to a statement of the British Prime Minister David Cameron, the Islamic State poses a “great deep threat” to the security of Britain, while he expressed his intense fears of a terrorist attack by the Islamist organization in Britain.

According to Cameron fighting Islamic State is a “generational struggle” against a “poisonous ideology”, adding that the UK should respond calmly and with purpose in this big threat.

Indeed, as announced by the Home Secretary Theresa May, the level of security alert in Britain for a terrorist threat associated with Syria and Iraq went from ‘substantial’ to ‘severe’.

According to the Home Secretary increasing the level associated with the developments in Syria and Iraq, where terrorists are planning attacks against Western countries and in some of these projects, “possibly involving foreign fighters who have visited this region derived from Britain and Europe to participate in the conflict. ”

However, the ministry stated that the level change means that an attack is “highly likely”, but there is no information about an “imminent” threat.

It is worth noting that according to intelligence agencies of Britain more than 500 Britons have gone to Syria and Iraq in the recent years.