1970 - First Oil British Invasion to the Argentina Platform

Since 1970 the British government had commissioned the University of Birmingham) a series of geological surveys in the Malvinas area, to determine the existence of underground oil. Towards middle of the decade the accumulated result of these investigations supported a moderate probability that indeed there were hydrocarbons in waters near the islands.

Several British oil companies turned their attention to the area.

When made ​​public British intentions to continue the exploration, Argentina Foreign Ministry issued the March 19, 1975 in a harsh statement that made ​​it clear that the country did not recognize any rights to the UK in regard to natural resources:

Given that the Malvinas Islands and these areas are an integral part of the country, the Argentine government says that they do not recognize or acknowledge the ownership or the exercise of any right relating to the exploration and exploitation of minerals or hydrocarbons by a foreign government. Therefore neither recognizes nor will recognize and consider irredeemably null any activity, action or agreement that could make or take Britain with reference to this issue that the Argentine government estimates of the utmost gravity and importance.

The Argentine government also considered the materialization of the aforementioned acts of nature, contrary to the resolution and consensus over the Malvinas Islands adopted by the United Nations, whose clear objective is the solution of the sovereignty dispute between countries by means peaceful of the bilateral negotiations.

Relations between the two countries deteriorated rapidly. The following month the new British ambassador informed the chancellor Vignes that before any Argentine attack against the islands UK would respond with military force.

Argentina replied on October 12, 1975 that any innovation for economic purposes would be of strong clash on the binational field, jeopardizing the peaceful settlement of the dispute; This Argentine warning does not paid off: on 16 October the government of His Majesty confirmed the shipment to the islands of official economic mission led by Lord Shackleton.

The foreign ministry official said no permission granted to the Shackleton mission, arguing that British unilateral actions on the islands were inconsistent with the negotiations under UN supervision trying to settle the conflict of sovereignty.