plan to benefit the settlers. Puerto Toro, the next settlement to the islands, in Navarino Island, was re-established in 1969. Operation Soberanía Due to their strategic location south of the Beagle Channel and facing the border between the Pacific Ocean and the Atlantic Ocean, the islands had been claimed since 1904 by Argentina, not because of the treaty of 1881 but for so-called "political reasons". Whichever government controlled Picton, Lennox and Nueva could stake territorial rights further into the Ocean (important for the fishing industry), to several other islands, and to a larger part of Antarctica, where resource development and exploration were important. The dispute over control of the islands continued into the late 20th century. On 22 July 1971 Salvador Allende and Alejandro Lanusse, the presidents of Chile and Argentina, respectively, signed an arbitration agreement (the Arbitration Agreement of 1971). This agreement was to settle 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 South American continent. It was submitted to binding arbitration under the auspices of Queen Elizabeth II of the United Kingdom. On 25 January 1978 Argentina repudiated the arbitration decision. It began to prepare for war and the three islands plus the Hermite and Wollastone islands became the main objective of the Argentines. In order to increase deterrence against the Operation Soberanía, the Chilean Navy installed minefields in strategic areas on the islands. On 22 December 1978, Argentina commenced (and a few hours later aborted) Operation Soberanía to invade both those islands and continental Chile. Although it called off the operation, the Argentine government never gave up on the use of military force to pressure Chile. After the invasion of the Falklands on 2 April 1982, the Argentine junta planned the military occupation of the three islands, as stated by Brigadier Basilio Lami Dozo, chief of the Argentine Air Force during the Falklands war, in an interview with the Argentine magazine Perfil: L.F. Galtieri: "[Chile] have to know that what we are doing now, because they will be the next in turn. The last minefields were installed shortly after the 1982 Argentine invasion of the Falkland Islands. Since 2007 mine clearance in Chile has been carried out by de-mining units of the army and navy. Literature "The Survivors of the 'Jonathan'", also known as "Magellania", is a