This article deals with the diplomatic affairs, foreign policy and international relations of Argentina. At the political level, these matters are handled by the Ministry of Foreign Affairs, also known as the Cancillería, which answers to the President. The current Minister of Foreign Affairs, since September 2021, is Chancellor Santiago Cafiero.
The Strait of Magellan, also called the Straits of Magellan, is a navigable sea route in southern Chile separating mainland South America to the north and Tierra del Fuego to the south. The strait is considered the most important natural passage between the Atlantic and Pacific oceans. It was discovered and first traversed by Europeans by the Spanish expedition of Portuguese explorer Ferdinand Magellan in 1520, after whom it is named. Prior to this, the strait had been navigated by canoe-faring indigenous peoples including the Kawésqar.
Tierra del Fuego, officially the Province of Tierra del Fuego, Antarctica and South Atlantic Islands, is the southernmost, smallest, and least populous Argentine province.
Beagle Channel is a strait in the Tierra del Fuego Archipelago, on the extreme southern tip of South America between Chile and Argentina. The channel separates the larger main island of Isla Grande de Tierra del Fuego from various smaller islands including the islands of Picton, Lennox and Nueva; Navarino; Hoste; Londonderry; and Stewart. The channel's eastern area forms part of the border between Chile and Argentina and the western area is entirely within Chile.
Picton, Lennox and Nueva form a group of three islands at the extreme southern tip of South America, in the Chilean commune of Cabo de Hornos in Antártica Chilena Province, Magallanes and Antártica Chilena Region. Located in the Tierra del Fuego archipelago, they lie east of Navarino Island and are separated from the Argentine part of Isla Grande in the north by the Beagle Channel. They have an area of 170.4 km2 (Lennox), 105.4 km2 (Picton), 120.0 km2 (Nueva).
The Beagle conflict was a border dispute between Chile and Argentina over the possession of Picton, Lennox and Nueva islands and the scope of the maritime jurisdiction associated with those islands that brought the countries to the brink of war in 1978.
Dante Caputo was an Argentine academic, diplomat and politician, who served as the nation's foreign minister under President Raúl Alfonsín.
International relations between the Republic of Chile and the Argentine Republic have existed for decades. Argentina and Chile share the world's third-longest international border, which is 5,300 km (3,300 mi) long and runs from north to south along the Andes mountains. Although both countries gained their independence during the South American wars of liberation, during much of the 19th and the 20th century, relations between the countries were chilled as a result of disputes over the border in Patagonia. Despite this, Chile and Argentina have never been engaged in a war with each other. In recent years, relations have improved dramatically in spite of social differences, as well as ideological differences between the current presidents of Chile and Argentina. Despite increased trade between the two countries, Argentina and Chile have followed quite different economic policies. Chile has signed free trade agreements with countries such as China, the US, Canada, South Korea, and the EU, and is an active member of the APEC, while Argentina belongs to the Mercosur regional free trade area. In April 2018, both countries suspended their membership from the UNASUR.
The region of the Beagle Channel, explored by Robert FitzRoy in the 1830s, was one of the last to be colonized by Chile and Argentina. The cold weather, the long distances from other inhabited regions, and the shortage of transport and subsistence, kept it far from the governmental task.
On 22 July 1971 Salvador Allende and Alejandro Lanusse, the Presidents of Chile and Argentina, signed an arbitration agreement. This agreement related to their dispute over the territorial and maritime boundaries between them, and in particular the title to the Picton, Nueva and Lennox islands near the extreme end of the American continent, which was submitted to binding arbitration under the auspices of the United Kingdom government.
Operación Soberanía was a planned Argentine military invasion of Chile due to the Beagle conflict. The invasion was initiated on 22 December 1978 but was halted after a few hours and Argentine forces retreated from the conflict zone without a fight. Whether the Argentine infantry actually crossed the border into Chile has not been established. Argentine sources insist that they crossed the border.
The direct negotiations between Chile and Argentina about the islands and maritime rights in Beagle conflict began after the Queen Elizabeth II of the United Kingdom announced on 2 May 1977 the judgement of the Beagle Channel Arbitration to the governments of both countries. The court ruled that the islands and all adjacent formations belonged to Chile. The direct negotiations finished with the Act of Montevideo on 9 January 1979, where both countries accept the papal mediation after Argentina's call off of the Operation Soberanía. This was the most dangerous phase of the Beagle Conflict and there was a real possibility of open warfare.
The Papal mediation in the Beagle conflict followed the failure of negotiations between Chile and Argentina, when, on 22 December 1978, the Argentinian Junta started Operation Soberanía, to invade Cape Horn and islands awarded to Chile by the Beagle Channel Arbitration. Soon after the event, Pope John Paul II offered to mediate and sent his personal envoy, Cardinal Antonio Samoré, to Buenos Aires. Argentina, in acceptance of the authority of the Pope over the overwhelmingly Catholic Argentine population, called off the military operation and accepted the mediation. On 9 January 1979, Chile and Argentina signed the Act of Montevideo formally requesting mediation by the Vatican and renouncing the use of force.
The Snipe incident was a military incident that took place between Chile and Argentina during 1958 as a result of a disputed border line in the Beagle Channel.
The Boundary Treaty of 1881 between Argentina and Chile was signed on 23 July 1881 in Buenos Aires by Bernardo de Irigoyen, on the part of Argentina, and Francisco de Borja Echeverría, on the part of Chile, with the aim of establishing a precise and exact border between the two countries based on the uti possidetis juris principle. Despite dividing largely unexplored lands, the treaty laid the groundwork for nearly all of Chile's and Argentina's 5600 km current border.
Foreign relations between Argentina and the Holy See, have existed for over a century. The current pope, Pope Francis, was the former Archbishop of Buenos Aires.
The southern coast of Chile presents a large number of fjords and fjord-like channels from the latitudes of Cape Horn to Reloncaví Estuary. Some fjords and channels are important navigable channels providing access to ports like Punta Arenas, Puerto Chacabuco and Puerto Natales.
In the late 1840s, the Argentine Confederation attempted to regulate traffic on the Paraná and Uruguay rivers, which impacted upon Anglo-French trade with the landlocked Paraguay. As a result, Britain and France took military action in the blockade of the Río de la Plata. Although militarily successful, the victories against Argentine forces proved somewhat pyrrhic and both withdrew their forces and made treaties with Argentina. The peace treaty with the British is referred to as the Convention of Settlement; or the Arana–Southern Treaty.
Between 1883 and 1906 Tierra del Fuego experienced a gold rush attracting many Chileans, Argentines and Europeans to the archipelago, including many Dalmatians. The gold rush led to the formation of the first towns in the archipelago and fueled economic growth in Punta Arenas. After the gold rush was over, most gold miners left the archipelago, while the remaining settlers engaged in sheep farming and fishing. Indigenous Selk'nam populations declined sharply during the rush.
Pope John Paul II 
es:Tratado de Paz y Amistad entre Argentina y Chile de 1984 at Wikisource 
