Philip Honour: In the run-up to the Olympics, and as an emerging world power, China must stand by its obligations in Darfur

Philip Honour: The UN has a chance to salvage its reputation and redefine itself for the 21st century, but not until the situation in Darfur is stabilised

Philip Honour: The people in Darfur don't need your charity - they need you to do everything you can to keep their cause in the public eye