with a diplomatic rank of an ambassador United States: appointed numerous special envoys including a special envoy for Northern Ireland with the diplomatic rank of ambassador to help with the Northern Ireland peace process. Special envoys have also been appointed for Afghanistan, Yemen, Sudan, Syria, Middle East peace, Eurasian energy, climate change, and human rights in North Korea. Other posts include special representative, special advisor, and special coordinator. The Secretary-General of the United Nations personally mandates special envoys for a particular field, including: United Nations Special Envoy for HIV/AIDS in Africa United Nations Special Envoy on Climate Change United Nations Special Envoy for Kosovo United Nations Special Envoy for Darfur United Nations Special Envoy for Refugees The director-general of UNESCO appoints special envoys who can use their talents and renown to further the organization's ideals and action. Envoys include: Special Envoy for Basic and Higher Education Sheikha Mozah bint Nasser al-Missned of Qatar Special Envoy for Water Prince Talal bin Abdulaziz al Saud Special Envoy on Literacy for Development Princess Laurentien of the Netherlands A sui generis case is the High Representative for Bosnia and Herzegovina The Australian Department of Foreign Affairs and Trade maintains a variety of special interest ambassador and envoy positions including the ambassador for counter-terrorism and the ambassador for the environment. The Niue Government appoints special envoys to expand Niue's presence internationally. Envoys include Special Envoy to Niue for COP26 2021 United Nations Climate Change Conference Special Envoy to Niue for the 2022 Japan State Funeral for the former Japan Prime Minister Shinzo Abe Usage worldwide Most countries worldwide have some form of internal rank, roughly parallel to the diplomatic ranks, which are used in their foreign service or civil service in general. The correspondence is not exact, however, for various reasons, including the fact that according to diplomatic usage, all Ambassadors are of equal rank, but Ambassadors of more senior rank are typically sent to more important postings. Some countries may make specific links or comparisons to military ranks. Australia Officers from the Department of Foreign Affairs and Trade (DFAT) are graded into four broad bands (BB1 to BB4), with the Senior Executive Service (SES Band 1 to SES Band 3) following above. Ambassadors, High Commissioners and Consuls-General usually come from the Senior Executive Service, although in smaller posts the head of mission may be a BB4 officer. Generally speaking (and there are variations in