the root causes and we have to work asa the root causes and we have to work as a society, government, police and civil society to get the root of this cultural issue and try to steer young people away from violence, from feeling it is normal and necessary to carry a knife. here at least the message got through. now we are going to go straight to davos, because prime minister theresa may is about to make her speech to the world economic forum. let's have a listen to what she's got to say. i argued that the benefits of free trade were not being felt by all. and i warned that the failure of political and business leaders to address this threatened to undermine popular support for the entire rules —based system support for the entire rules —based syste m o n support for the entire rules —based system on which our global security and prosperity depends. but i also argued that we could change this. not by turning our backs on free