UK could face Islamist threat for decades, former MI5 chief warns - BBC News The former head of MI5 says terror concerns are a "generational problem" likely to last 20 or 30 years.

The former head of MI5 says terror concerns are a "generational problem" likely to last 20 or 30 years. UK could face Islamist threat for decades, former MI5 chief warns - BBC News "I think this is genuinely a generational problem. I think we are going to be facing 20 to 30 years of terrorist threat and therefore we need, absolutely critically, to persevere."