 
 An ambassador-at-large is a diplomat, a secretary, or a minister of the highest rank who is accredited to represent a country and its people internationally.
Unlike an ambassador-in-residence, who is usually limited to a country or embassy, the ambassador-at-large is entrusted to operate in several usually neighboring countries, a region or sometimes hold a seat in an international organization like the United Nations and the other international organizations. In some cases, an ambassador-at-large may even be specifically assigned a role to advise and assist the state or a government in particular issues. Historically, presidents or prime ministers have designated special diplomatic envoys for specific assignments, primarily overseas but sometimes also within the country as an ambassador-at-large.
According to international protocol, ambassadors and ambassadors-at-large are officially styled and addressed as His/Her Excellency, or Mister/Madam Ambassador. The title may be abbreviated in official correspondence as H.E. [1]
The US president appointed the first official who specifically bore the title of ambassador-at-large on 12 March 1949 under the authority vested in Article II, Section 2 of the US Constitution to deal with specific foreign policy issues, which have been frequently spelled out in their commissions.
Ambassador-at-large positions in the diplomatic corps of the US State Department include:
 Princess Masna Bolkiah, Brunei's Ambassador-at-Large and Minister of Foreign Affairs and Trade
  Princess Masna Bolkiah, Brunei's Ambassador-at-Large and Minister of Foreign Affairs and Trade Mehdi Samii, Iranian ambassador-at-large for Economic affairs and Advisor to the Prime Minister for International Financing (1971–1973) [2]
  Mehdi Samii, Iranian ambassador-at-large for Economic affairs and Advisor to the Prime Minister for International Financing (1971–1973) [2]  Lon Non, Ambassador-at-Large for the Khmer Republic
  Lon Non, Ambassador-at-Large for the Khmer Republic Mohammad Ziauddin, Ambassador-at-large of the Prime Minister of Bangladesh
  Mohammad Ziauddin, Ambassador-at-large of the Prime Minister of Bangladesh  Javed Malik, Pakistan's Ambassador-at-Large to the Persian gulf Region
  Javed Malik, Pakistan's Ambassador-at-Large to the Persian gulf Region Carlos P. Romulo, President of the United Nations General Assembly (1949–1950), Secretary/Minister of Foreign Affairs and Ambassador-at-Large under three Philippine Presidents: Elpidio Quirino (1950–1952), Diosdado Macapagal (1963–1964) and Ferdinand Marcos (1968–1984)
  Carlos P. Romulo, President of the United Nations General Assembly (1949–1950), Secretary/Minister of Foreign Affairs and Ambassador-at-Large under three Philippine Presidents: Elpidio Quirino (1950–1952), Diosdado Macapagal (1963–1964) and Ferdinand Marcos (1968–1984) León María Guerrero III, Undersecretary for Foreign Affairs under Ramon Magsaysay (1953–1954) and Ambassador-at-Large under four Philippine Presidents: Ramon Magsaysay (1954–1957), Carlos P. Garcia (1957–1961), Diosdado Macapagal (1961–1965) and Ferdinand E. Marcos (1965–1980)
  León María Guerrero III, Undersecretary for Foreign Affairs under Ramon Magsaysay (1953–1954) and Ambassador-at-Large under four Philippine Presidents: Ramon Magsaysay (1954–1957), Carlos P. Garcia (1957–1961), Diosdado Macapagal (1961–1965) and Ferdinand E. Marcos (1965–1980) Chan Heng Chee, Ambassador-at-Large representing Singapore and former ambassador to the United States from 1996 to 2012 [3]
  Chan Heng Chee, Ambassador-at-Large representing Singapore and former ambassador to the United States from 1996 to 2012 [3]  Tommy Koh, Ambassador-at-Large of Singapore
  Tommy Koh, Ambassador-at-Large of Singapore Ong Keng Yong, Ambassador-at-Large at the Ministry of Foreign Affairs, Singapore and former Secretary-General of Association of Southeast Asian Nations (ASEAN)
  Ong Keng Yong, Ambassador-at-Large at the Ministry of Foreign Affairs, Singapore and former Secretary-General of Association of Southeast Asian Nations (ASEAN) Gopinath Pillai, former Ambassador-at-Large of Singapore [4]
  Gopinath Pillai, former Ambassador-at-Large of Singapore [4]  Gene Loh, Ambassador-at-Large of the Republic of China (Taiwan) from 1997 to 2001 [5]
  Gene Loh, Ambassador-at-Large of the Republic of China (Taiwan) from 1997 to 2001 [5]  Audrey Tang, Cyber Ambassador-at-Large of the Republic of China (Taiwan) and former Minister of Digital Affairs [6]
  Audrey Tang, Cyber Ambassador-at-Large of the Republic of China (Taiwan) and former Minister of Digital Affairs [6]  Ahmet Davutoğlu, Formerly Ambassador-at-Large of Turkey; he subsequently served as Foreign Minister and Prime Minister
  Ahmet Davutoğlu, Formerly Ambassador-at-Large of Turkey; he subsequently served as Foreign Minister and Prime Minister Charles Aznavour, Franco-Armenian singer, Armenian Ambassador-at-Large to Switzerland, then to the United Nations Organization
  Charles Aznavour, Franco-Armenian singer, Armenian Ambassador-at-Large to Switzerland, then to the United Nations Organization  Petri Salo, Finland's Roving Ambassador for the South Caucasus (Armenia, Azerbaijan and Georgia) [7]
  Petri Salo, Finland's Roving Ambassador for the South Caucasus (Armenia, Azerbaijan and Georgia) [7]  Stavros Lambrinidis, Ambassador-at-Large of Hellenic Republic, Vice President of the European Parliament and Minister for Foreign Affairs of Greece
  Stavros Lambrinidis, Ambassador-at-Large of Hellenic Republic, Vice President of the European Parliament and Minister for Foreign Affairs of Greece  Georg von Habsburg, Ambassador-at-Large of Hungary [8]
  Georg von Habsburg, Ambassador-at-Large of Hungary [8]  Dame Nuala O'Loan, of Ireland. Roving Ambassador for Conflict Resolution and Special Envoy to Timor-Leste [9]
  Dame Nuala O'Loan, of Ireland. Roving Ambassador for Conflict Resolution and Special Envoy to Timor-Leste [9]  Jaroslaw Pijarowski, Ambassador-at-Large of International Human Rights Organization for Poland  [10]
  Jaroslaw Pijarowski, Ambassador-at-Large of International Human Rights Organization for Poland  [10]  Nicolas Kazadi, Ambassador-at-Large for the Democratic Republic of the Congo
  Nicolas Kazadi, Ambassador-at-Large for the Democratic Republic of the Congo Amina Mohammed, Ambassador-at-large representing Kenya
  Amina Mohammed, Ambassador-at-large representing Kenya Lineo Ntoane, Kingdom of Lesotho Ambassador-at-large
  Lineo Ntoane, Kingdom of Lesotho Ambassador-at-large Princess Esther Kamatari, Ambassador-at-large representing Burundi
  Princess Esther Kamatari, Ambassador-at-large representing Burundi Chavano "Buddy" Hield, Ambassador-at-Large for The Bahamas [11]
  Chavano "Buddy" Hield, Ambassador-at-Large for The Bahamas [11]  Robyn Rihanna Fenty, Ambassador-at-Large for Barbados [12]  [13]
  Robyn Rihanna Fenty, Ambassador-at-Large for Barbados [12]  [13]  Attallah Shabazz, Ambassador-at-Large for Belize
  Attallah Shabazz, Ambassador-at-Large for Belize Oscar de la Renta, Ambassador-at-Large of the Dominican Republic [14]
  Oscar de la Renta, Ambassador-at-Large of the Dominican Republic [14]  Wyclef Jean, Ambassador-at-Large for Haiti
  Wyclef Jean, Ambassador-at-Large for Haiti Barbara Carrera, former Ambassador-at-large for Nicaragua, appointed by then-president Arnoldo Alemán
  Barbara Carrera, former Ambassador-at-large for Nicaragua, appointed by then-president Arnoldo Alemán  Suzan Johnson Cook, former United States Ambassador-at-Large for International Religious Freedom
  Suzan Johnson Cook, former United States Ambassador-at-Large for International Religious Freedom Henry A. Crumpton, Coordinator for Counterterrorism at the Department of State [15]
  Henry A. Crumpton, Coordinator for Counterterrorism at the Department of State [15]  Eric Goosby, United States Global AIDS Coordinator (Ambassador-at-Large for HIV and AIDS) [16]
  Eric Goosby, United States Global AIDS Coordinator (Ambassador-at-Large for HIV and AIDS) [16]  John Hanford, former United States Ambassador-at-Large for International Religious Freedom
  John Hanford, former United States Ambassador-at-Large for International Religious Freedom Philip Jessup, former United States Ambassador-at-large under President Harry S. Truman
  Philip Jessup, former United States Ambassador-at-large under President Harry S. Truman Strobe Talbott, US Ambassador-at-Large and Special Advisor to the Secretary on the New Independent States [17]
  Strobe Talbott, US Ambassador-at-Large and Special Advisor to the Secretary on the New Independent States [17] 
Under the Basic Law, the Hong Kong Special Administrative Region is exclusively in charge of its internal affairs, whilst the central government of China is responsible for its foreign affairs and defence. As a separate customs territory, Hong Kong maintains and develops relations with foreign states and regions, and plays an active role in such international organisations as World Trade Organization (WTO) and the Asia-Pacific Economic Cooperation (APEC) in its own right under the name of Hong Kong, China. Hong Kong participates in 16 projects of United Nations Sustainable Development Goals.
Saint Vincent and the Grenadines maintains close ties to the US, Canada, and the United Kingdom, and cooperates with regional political and economic organizations such as the Organisation of Eastern Caribbean States (OECS) and CARICOM. St. Vincent and the Grenadines is a member of the United Nations, the Commonwealth of Nations, the Organization of American States, and the Association of Caribbean States (ACS). Saint Vincent is also the smallest nation ever to be on the United Nations Security Council.

Singapore maintains diplomatic relations with 189 UN member states. The three exceptions are the Central African Republic, Monaco and South Sudan.

Foreign relations of the Republic of China (ROC), more commonly known as Taiwan, are accomplished by efforts of the Ministry of Foreign Affairs of the Republic of China, a cabinet-level ministry of the Government of the Republic of China. As of January 2024, the ROC has formal diplomatic relations with 11 of the 193 United Nations member states and with the Holy See, which governs the Vatican City State. In addition to these relations, the ROC also maintains unofficial relations with 59 UN member states, one self-declared state (Somaliland), three territories (Guam, Hong Kong, and Macau), and the European Union via its representative offices and consulates. In 2021, the Government of the Republic of China had the 33rd largest diplomatic network in the world with 110 offices.

Ambassadors of the United States are persons nominated by the president to serve as the United States' diplomatic representatives to foreign nations, international organizations, and as ambassadors-at-large. Under Article II, Section 2 of the U.S. Constitution, their appointment must be confirmed by the United States Senate; while an ambassador may be appointed during a recess, they can serve only until the end of the next session of Congress, unless subsequently confirmed.

In many countries, the ministry of foreign affairs is the highest government department exclusively or primarily responsible for the state's foreign policy and relations, diplomacy, bilateral, and multilateral relations affairs as well as for providing support, including consular services, for a country's citizens who are abroad. The entity is usually headed by a foreign minister or minister of foreign affairs. The foreign minister typically reports to the head of government.

Nelson Strobridge Talbott III is an American foreign policy analyst focused on Russia. He was associated with Time magazine, and a diplomat who served as the deputy secretary of state from 1994 to 2001. He was president of Brookings Institution from 2002 to 2017.

The Paul H. Nitze School of Advanced International Studies (SAIS) is a graduate school of Johns Hopkins University based in Washington, D.C. with campuses in Bologna, Italy and Nanjing, China.
Diplomatic rank is a system of professional and social rank used in the world of diplomacy and international relations. A diplomat's rank determines many ceremonial details, such as the order of precedence at official processions, table seatings at state dinners, the person to whom diplomatic credentials should be presented, and the title by which the diplomat should be addressed.
The Order of Sikatuna is the national order of diplomatic merit of the Republic of the Philippines. It is conferred upon individuals who have rendered exceptional and meritorious services to the Republic of the Philippines, upon diplomats, officials and nationals of foreign states who have rendered conspicuous services in fostering, developing and strengthening relations between their country and the Philippines, or upon personnel of the Philippine Department of Foreign Affairs (DFA), both in the Home Office and in the Foreign Service.

The Global AIDS Coordinator at the United States Department of State is the official responsible for overseeing U.S.-sponsored humanitarian aid programs to combat the AIDS epidemic around the world. The Global AIDS Coordinator holds the rank of Ambassador-at-Large and Assistant Secretary.

This article deals with the diplomatic affairs, foreign policy and international relations of Barbados.

Relations between Barbados and China began on 4 September 1967 with Barbados recognizing the People's Republic of China from 30 May 1977, just over one decade after the eastern Caribbean island nation's independence from the United Kingdom.

Fredrick F. Chien, or Fred Chien, Chien Foo, is a retired Taiwanese diplomat and politician who served as the President of the Republic of China Control Yuan from 1999 to 2005. After graduating from Yale University, he assumed a series of governmental positions include Director-General of the Government Information Office from 1972 to 1975, Republic of China Representative to the United States from 1982 to 1988, Chairman of the Council for Economic Planning and Development from 1988 to 1990, and Minister of Foreign Affairs from 1990 to 1996. He was also the Speaker of the National Assembly between 1996 and 1999.

The Order of Diplomatic Service Merit (Korean: 수교훈장) is one of South Korea's orders of merit. It is awarded by the President of South Korea for "outstanding meritorious services in the interest of enhancing national prestige and promoting amity with allies." It is a relatively rare honor, being usually awarded to a handful of people every year, and is one of the highest civilian awards of South Korea.