one knife. that has brought the entirety of the united kingdom government to a standstill. it split the entirety of central london in lockdown. capitals and major cities around the world are reacting on what is the one-year mark of the attack in brussels. we have no idea who this assailant is, what his beef was, and in fact, we don't know his condition at this moment. we do know that after he stabbed people, authorities engaged him, shot him on scene and very famously, the british bobby stone, police always carry weapons. at this part of central london, around the heart of government. they are very well armed and they worked today and whoever this assailant was after stabbing a number of people and taking his vehicle down the bridge, apparently as a british authorities have put it, mowing down a number of people, people