with that attack, as peter was eluding to, the use of knives, but also in 2017, all three of the attackers were wearing fake suicide vests. why were they likely in that attack in 2017 wearing fake suicide vests? because they wanted to be killed by police and they were killed by police. they wanted to be martyrs, to go to paradise. could that be the case with this particular attacker? we don't know. we don't mow the motivation. >> talk about the state of fight against terrorism as it stands now in the uk. >> i think the perception is the threat has been reduced. that's been something that the british home office has done visibly by reducing the terror threat level to the medium level. that signaled to the british public that the country is safer. there was concern because so many young men went to join the