Thai protest leader Suthep Thaugsuban says he has met PM Yingluck Shinawatra and given her two days to "return power to the people". Mr Suthep said the meeting had been held under the auspices of the military and there was no compromise. He did not say what action would follow if the ultimatum were not heeded. On the eighth day of action to unseat the PM, police fended off protesters who descended on key sites in Bangkok. Four people have died in the unrest. Continue reading the main story At the scene Jonathan Head BBC News, Bangkok They marched up towards the prime minister's office complex in a noisy, colourful caravan, Thai flags fluttering in their thousands. Protest…