ວີດີໂອ ທະຫານອັງກິດ ຖືກຂ້າຕາຍ ທີ່ກຸງລອນດອນ

British Prime Minister David Cameron has described the killing of a British soldier in broad daylight in a London street as an 'attack on Britain' and a 'betrayal of Islam'. The attackers, who said they were taking revenge for the killing of Muslims, are thought to be British citizens of African origin. Henry Ridgwell reports from the British capital.