Leytonstone Tube stabbing: David Cameron defends police response to attack

Prime Minister David Cameron praised Britains police force on 7 December following a knife attack at an underground station in east London over the weekend. Speaking at a school in Burton-upon-Trent, the PM defended the actions of those who intervened during the attack, which injured two people at Leytonstone Tube station on 5 December. Dec 7, 2015