By Becky Johnson
Prince Charles and Prince William are hosting a conference to call for a global partnership to stop illegal trade in wildlife.
Along with Environment Secretary Owen Paterson they will tell delegates from around the world that the trade presents a grave threat not only to the natural world, but also to global security.
The conference will hear that both black and white rhino are coming under unprecedented attack, fuelled by demand for their horns.
Wildlife experts believe demand for ivory means that for the first time certain populations of African elephant face extinction within a decade.
Delegates at St James's Palace will be told that what used to be called "poaching" must now be called "trafficking" due to growing evidence that the trade is being driven by international organised criminal networks and, in some cases, terrorist and rebel militia groups.
Representatives from crime fighting organisations including Interpol, the United Nations Office on Drugs and Crime, WWF, Wild Aid and Traffic will be at the conference to discuss how to combat the problem.
The Prince of Wales will deliver a speech and the Duke of Cambridge will give a presentation.
As a patron of conservation charity the Tusk Trust, Prince William travelled with Prince Harry to Botswana in 2010 to raise awareness of the work being done. More....