Climate change and pandemics may have moved up the corporate agenda, but few major businesses around the world can afford to be complacent about the threat from terrorism.

“I don’t see the threat diminishing,” says Kroll’s Bob Grenier, who served 27 years with the CIA before moving to the private sector. “Although there has been tremendous progress and real gains in terms of effectiveness of counter-terrorism, multilateral cooperation and intelligence sharing, we have not turned the corner in a strategic sense.”