 British Defence Secretary Ben Wallace has warned that a threat of further attacks around Kabul Airport will increase as Western troops get closer to leaving the country. Wallace, however, says Thursday's blast, which killed more than 80 people, had not accelerated Britain's departure from Afghanistan. Yeah, I mean two things. We always thought there would be a risk that escalates as we left in general terms. Somebody would have wanted to claim that they had, you know, kicked us all out. Someone would have wanted to grab the media attention, and of course ISIS being probably the most ruthless, the most cowardly when it comes to its type of attacks, but also the one that doesn't really have any regard for life was obviously the prime suspect. That has come out as predicted. They have started to make operations. We saw that tragically last night. But there could be other enemies or other terrorist groups who will want to attack us. It's going to get more, you know, volatile, I suspect, as we get towards the end, and that's why our troops are on a sort of higher alert.