we start in myanmar where activists say security forces have killed at least 39 people in one of the deadliest days of demonstrations against the military coup last month. 21 died in the biggest city yangon after two china owned factories were attacked. beijing has asked the authorities to protect its businesses. a police officer also died in clashes. our diplomatic correspondent james landale reports. they have built themselves barricades, they have fashioned makeshift shields. but when the security forces opened fire, there was nothing to do but run. this was the scene in myanmar s biggest city, yangon, where more than 20 people are reported to have died. some here see china as supporting myanmar s military rulers, and several chinese owned factories were set on fire. so, troops were sent in and martial law for two districts was declared on state tv. there were fatal clashes elsewhere in myanmar. the now familiar round of tear gas, rubber bullets and gunfire and the ever ri