Annual update from MI5 chief highlighted a complex cocktail that could have real-life consequences for Britain

MI5’s annual threat update covers so much ground it is easy to feel anxious. The terror threat has become more diverse, with far-right anti-migrant threats on the rise; while Iran has now firmly emerged alongside Russia as a country seeking to undertake violent and deadly plots in the UK.

“There is no law of physics dictating that rising state threats will be accompanied by diminishing terrorist threats,” MI5’s director general, Ken McCallum, said, although one of his core messages was that people and the country at large needed to focus on being more resilient. “In this new world, we should expect to be tested.”