Malvinas: diplomatic protest over HMS Medway and announcement of arbitration on hydrocarbons in an interview

The Argentine Foreign Ministry reported that on July 13 it submitted a formal note of protest to the Embassy of the United Kingdom regarding the movements of the vessel HMS Medway, which according to the official statement were not notified in accordance with current bilateral agreements and involved transit through Argentine Territorial Sea. The ministry led by Foreign Minister Quirno described the action as a violation of the Joint Declaration of September 25, 1991, in its section on confidence-building measures.

That document is the only primary source available in the material. The other two journalistic pieces address the same topic from different angles: a La Nación brief that summarizes morning news and an interview published by La Derecha Diario in which Quirno explains the scope of an international arbitration. None of the three sources coincide on the central object of the controversy.

What the official document says and what it does not

The Foreign Ministry note is limited to the protest over the HMS Medway. It mentions UN General Assembly Resolution 31/49, which urges the parties to refrain from introducing unilateral modifications while the sovereignty dispute remains pending. It reaffirms Argentine rights over the Malvinas, South Georgia and the South Sandwich Islands and the surrounding maritime spaces.

The text does not mention arbitration, hydrocarbons, UNCLOS, Sea Lion or the North Malvinas Basin. Nor does it set deadlines or announce provisional measures. It is a diplomatic protest over a specific military incident, not an announcement of international litigation.

The foreign minister’s version on arbitration

According to La Derecha Diario, Quirno stated in an interview with Eduardo Feinmann that the Government formally warned the United Kingdom as a preliminary step to an arbitration procedure under UNCLOS. The foreign minister reportedly said that it is the first time that the dispute over unilateral acts linked to exploitation is submitted to an international tribunal. The news article attributes these statements to the official and presents them as part of an interview, not as an official statement.

The article notes that the measure targets hydrocarbon activities in the North Malvinas Basin, particularly the Sea Lion project, over resources that the Government considers part of the Argentine Continental Shelf. It describes an initial 15-day period for London to halt the challenged activities and the possibility of turning to the International Tribunal for the Law of the Sea to request provisional measures. It also mentions that an eventual ruling would be binding on the parties.

The same source indicates that Quirno clarified that the procedure will not submit the discussion on the sovereignty of the islands to arbitration, but rather the unilateral actions related to natural resources. It also mentions the regulation of Law 26,659 to expand the capacity to sanction companies and suppliers linked to British licenses, and criminal actions initiated during September against companies in the sector.

What the sources do not confirm with each other

La Nación presents the arbitration as a fact in its headline, but the available body does not provide its own details: it is a summary of morning news. It does not allow verification of the announcement or the existence of the warning. La Derecha Diario is the only source that develops the arbitration, but it does so based on statements by the foreign minister in an interview, without reproducing the text of the warning or the procedure document.

The Foreign Ministry, on the other hand, does not mention the arbitration. Its statement refers to a different episode: the transit of the HMS Medway. There is no official source in the material confirming the start of the arbitration procedure, the 15-day period or the invocation of UNCLOS.

There is also no agreement on dates. The diplomatic protest is dated July 13. Quirno’s interview is published in the context of news from September 29, 2026, according to La Nación’s summary. The material does not allow establishing whether the arbitration has already begun, whether the warning was prior or subsequent to the protest, or whether both courses of action are part of the same strategy.

What each document establishes

The data point worth following

The distance between the diplomatic protest confirmed by the Foreign Ministry and the arbitration announced in an interview is the central point. The official document allows verification of a concrete action: the July 13 note over the HMS Medway. The arbitration, by contrast, appears only in a secondary source that cites statements by the foreign minister. It is worth following whether the Foreign Ministry publishes the text of the warning, whether it confirms the invocation of UNCLOS and whether the 15-day period has a documentary correlate. It also matters whether the Government presents the arbitration as a complement to the protest or as a separate path.