1986 - British Invasion to the Argentine Sea - Fishery Conservation Zone

In the first quarter of 1986, the Argentine government began to implement a policy of stricter fishing, which was intended to deal with the intense resource predation of the South Atlantic.

The new policy included the delivery of fishing permits to Russia and Bulgaria, countries that claim by Argentina recognized the sovereignty of the Malvinas, and there were negotiations and preliminary agreements to extend similar privileges to other nations.

On May 28, 1986 the Argentine Coast Guard PNA "Derves" intercepted a Taiwanese fishing vessel and ordered him to surrender before being taken to Puerto Deseado, where face criminal prosecution.

The fishing vessel argued  that was in the waters of the Malvinas Islands and not within the Argentina jurisdiction. Was told that he was actually on the surrounding sea islands belonging to Argentina. It was followed by a negotiation that lasted several hours. The refusal to abide by the fishing requirements, from Buenos Aires issued an order to use force and the fishing was sunk.

The United Kingdom condemned the Argentina action of "pursuing a claim of sovereignty by force" and called it "aggressive patrolling". The Thatcher government used these facts to justify its decision to unilaterally establish a radius of 150 nautical miles around the islands, which was an area that was called Falkland Islands Conservation Zone (FICZ) ("Conservation Zone of the Malvinas Islands") .