The diplomatic efforts of April
April 3: - The United Nations Security Council approved Resolution 502, which demanded Argentine withdrawal and the initiation of negotiations. Voting in favor of the resolution against Argentina were: USA, France, Guyana, Ireland, Japan, Jordan, Togo, Uganda, Zaire and Great Britain. The Soviet Union, China, Poland and Spain abstained. Only Panama voted against. General Mario Benjamín Menéndez was appointed Military Governor of the Malvinas Islands and an extraordinary session of the OAS was requested.
April 5: - The Argentine action caused the resignation of the English chancellor, Lord Carrington. The British Task Force left Portsmouth. The European Economic Community supported the English decision to apply economic sanctions to Argentina and Peru defined its determined support in favor of Argentina.
April 6: - Designated by President Reagan as mediator, General Alexander Haig conferred with the Argentine Foreign Minister, Nicanor Costa Méndez, in Washington.
April 7: - Haig traveled to London. The English ordered a naval blockade of the Falklands. Argentina called up its reserves and Costa Méndez returned to Buenos Aires.
April 8: - Alexander Haig met with the intransigent Margaret Thatcher. Argentina began the airlift to reinforce and supply the troops in Puerto Argentino. The English naval force was already sailing off the Azores Islands. Via the Swiss embassy in Buenos Aires, the United Kingdom reported that, as of 04:00 a.m. GMT on April 12, in a circle of 200 NM, a maritime exclusion zone would be established around the Islands. The novelty came at a time when General Menéndez took office as governor of the Malvinas. Squares, streets, public buildings and numerous private homes in practically the entire country had been flagged with the light blue and white emblem.
April 10: - President Galtieri held a meeting with Haig, recently arrived from London. Meanwhile, another popular demonstration in support of the recovery of the Malvinas Islands was taking place. Galtieri, from the balconies of the Casa Rosada, addressed the protesters.
April 11: - While it was announced that the talks were bogged down, John Paul II urged both countries to abandon extreme attitudes. General Haig returned to London. Dr. Costa Méndez affirmed that the dialogue continued.
April 12: - Haig informed Costa Méndez by telephone, from London, that Great Britain is irreducible. That morning, the Task Force ships had blocked the islands, while the Argentine Sea Fleet remained in its stations.
April 14: - Galtieri informed Reagan by telephone that there was a willingness to find a peaceful solution, Haig returned to Buenos Aires from London. Thatcher's action had received the support of the House of Commons.
April 16: - Haig spoke with Argentine authorities. As if to discourage this second round of talks, the United Kingdom communicated that any ship or aircraft that affected the Task Force, whether civil, commercial or military, would be considered hostile and attacked.
April 17: - In Buenos Aires, Secretary of State Haig emphasized to Argentines that they should trust that the US would achieve a satisfactory solution to national aspirations. He insisted on maintaining an ambiguous political framework that made it clear that the final intention would be the return of the islands to Argentina. General Haig gave the impression of being truthful and sincere, although events conspired against his good intentions.
April 19: - Dr. Costa Méndez requested the application of the Inter-American Treaty of Reciprocal Assistance (TIAR) before the OAS and General Haig returned to the United States.
April 20: - By 17 votes in favor, none against and four abstentions (USA, Colombia, Trinidad Tobago and Chile), Argentina managed to convene the XX Consultation Meeting of Ministers of Foreign Affairs of the 21 signatory nations of the Treaty of Rio, set for April 26. Meanwhile, the Argentine Air Force planes detected the Task Force entering the TIAR area adopting favorable positions for the battle.
April 22: - General Galtieri inspected the troops stationed in Malvinas. Chile, meanwhile, at the request of the British ambassador in Santiago, agreed to deploy military forces in the south of the country and dispatch its Navy in radio silence to sea, in particular its two Oberon-class submarines. These events worried the Argentine military commanders and affected, to a certain extent, the allocation of forces. Added to this was the collaboration in intelligence and the operation from Chilean territory of Canberra PR-9 photographic reconnaissance aircraft and two C-130 SIGINT communications intelligence aircraft. The Argentine government promulgated Decree No. 757 by which the capital of the Malvinas Islands was designated "Argentine Port."
April 25: - Great Britain declared a total exclusion zone around the Task Force, already in the TIAR area, and attacked the Argentine garrison on San Pedro Island. Argentina firmly protested both attacks before the Security Council.
April 26: - The Military Junta reported that the Argentine forces were ready for combat, up to the last defensive capacity. On this day, five MK-62 Canberra aircraft from Paraná Bombing Group 1 flew from their deployment base, Trelew, to Río Grande on the island of Tierra del Fuego before the start of hostilities. From there, with the callsign “Libra”, they set out for Georgia to repel the British frigates that were attacking the Argentine marines. The squadron was formed by: the B-105, crewed by Major Ramón Vivas and Aldo Escudero; the B-
108, first lieutenants Ricardo Papavero and Hugo Moreno; and B-109, first lieutenants Mario Baeza and Jorge Cardo; all, supported by a KC-130 and a Boeing 707 from El Palomar Transport Group 1, as relays and mission control respectively. This risky operation at the limit of the Canberra's range of action reached the outskirts of Cumberland Bay. At that point, the Control Officer traveling on the B-707 decided to suspend it when he verified, due to the change in the vessels' device, that they had been detected and lost their surprise.
April 30: - Secretary of State Alexander Haig announced the definitive failure of the negotiations. Argentina presented a note to the UN informing that it would make use of the right of self-defense if attacked and, shortly afterwards, President Reagan publicly declared US support for Great Britain in the conflict, followed by the dramatic imposition of an embargo on arms exports and credit operations to the Argentine Republic. Simultaneously, the Chilean Armed Forces completed a deployment in the Southern Zone of the country with similar - or even greater - characteristics than in 1978, when both nations were on the brink of war over the issue of the Beagle Channel. The war was about to begin and no one had seriously tried to prevent it. Late on the southern night of April 30, a Vulcan bomber, registration to Puerto Argentino.