Argentinian Olympic advert depicts Falkland Islands as 'Argentine soil' Reuters/Argentinian government

Argentina has released a provocative advertisement that was filmed secretly on the Falklands and depicts the islands as "Argentine soil" in an apparent barb aimed at Britain ahead of the London 2012 Olympics.

"To compete on English soil, we train on Argentine soil," is the slogan closing the advert aired on Wednesday night showing Fernando Zylberberg of the Argentine men's hockey team on a training run past several landmarks on the Falklands.

The advert contradicts the government's recent denial that Argentina would seek political gain from the London games, which take place from 27 July to 12 August. Argentina claims sovereignty over the islands in the south Atlantic and calls them Las Malvinas.

President Cristina Fernández de Kirchner. Photograph: Leo La Valle/Epa/Corbis

President Cristina Fernandez de Kirchner's government has pushed hard for negotiations with Britain this year, the 30th anniversary of Argentina's 1982 invasion that sparked a short war won by Britain with the loss of more than 900 British and Argentinian lives.

The advert was aired on the 30th anniversary of the sinking of Argentinian ship the General Belgrano during the war.

Zylberberg, who was on the islands last month with many Argentinian participants in the Falklands marathon, was filmed doing exercises outside the Globe Tavern in the islands' capital, Port Stanley, running past the offices of the Penguin News newspaper and doing step-ups at a British war memorial.

"The idea was to get the message through that the Malvinas are Argentine," Zylberberg told the Cadena 3 radio station in an interview about the clandestinely filmed advert.

"I spent a whole week running on the island. It was an incredible experience because we were surrounded by [Argentine] war veterans," he said. Veterans were on a visit to the islands and some took part in the marathon.

The Argentinian government sports secretary, Claudio Morresi, told Reuters in an interview last month: "The Argentine delegation will travel to London with the conviction in their minds and hearts that the Malvinas are Argentine but all they will be going to London to do is take part in the sporting event."