It acknowledges the United States is "among the world's major markets for wildlife and wildlife products, both legal and illegal" but also points to demand for ivory and rhino horn in Asia, "from a rapidly expanding wealthy class that views these commodities as luxury goods that enhance social status."
'If we fail, it will be too late'
William and Charles released an unusual joint video message Sunday that urged people worldwide to take a stand.
But William, who has been a patron since 2005 of the wildlife conservation charity Tusk Trust, faced criticism Saturday in UK newspaper The Sun for reportedly going on a boar hunting trip to Spain with his brother, Prince Harry. Wild boar are legally hunted in the country, but the timing of the trip raised questions, it said.
"Prince William has gone shooting -- a day before launching a campaign to stop wildlife being killed," the popular tabloid said.
In the joint video, recorded in November, Charles said it was time to treat the effort to stop the illegal wildlife trade "like a battle, because it is precisely that." He pointed to the sophisticated weaponry used by poachers and the threat that such criminal activity poses to economic and social stability in the countries affected.
William said that he and his father were optimistic the "tide can be reversed."
"We have to be the generation that stopped the illegal wildlife trade, and secured the future of these magnificent animals, and their habitats, for if we fail, it will be too late," the younger prince adds.
William, whose wife Catherine gave birth to their son George last summer, said that since becoming a father, he has become "even more devoted to protecting the resources of the Earth for not only my own son but also the other children of his generation to enjoy."
The video, which was recorded in November, ends with the pair saying the phrase "Let's unite for wildlife!" in Arabic, Vietnamese, Swahili, Spanish and Mandarin.
The aim is to be understood by as many people as possible living in the countries most affected by the illegal wildlife trade.