than a threat it once was? >> it might have been part of trying to message to the british public that we've made progress on this fight and also lessening the power of isis. when you have something like this, just the fact they were wearing suicide vest-type things apparently, and the public was getting to see that, that in and of itself spreads the terror. is isis going to be as deadly as before? perhaps not. but it's going to continue to inspire small groups of people to raise the banner and say we're not happy with the way the western world is running things and we will give our lives in this violence. >> nic robertson, the assistant commissioner saying he was going to give the prime minister, boris johnson, a personal briefing. they don't see this incident yet as being over. the cordon is in place. they have asked people to stay aaway. searches are ongoing. >> it will be important for it