Zimbabwe is seeking international support to be permitted to sell its supply of seized elephant ivory.Selling the ivory could earn about $600 million.Officials say the money could be used to support efforts to deal with the country's fast-growing elephant population.Zimbabwean officials have urged the European Union (EU) and other nations to support the sale of ivory, which has been banned since 1989.The ban was enacted by CITES, the international body that governs the world's endangered species.Officials from Zimbabwe's National Parks and Wildlife Management Authority recently showed ambassadors from the EU, Canada and the United States its supply of ivory tusks.The tusks are kept in secure containers in the capital, Harare.They were all seized from poachers and collected from elephants that died.Fulton Mangwanya leads the authority for Zimbabwe.