Argentina has accused the UK of provocative behaviour by planning military exercises in the Falkland Islands next week.
Deputy foreign minister Eduardo Zuain summoned the British ambassador in Buenos Aires to protest over the "new show of military force".
It is the latest diplomatic clash following heightened tensions over the territory since Cristina Fernandez de Kirchner took power in Argentina.
Russian Foreign Secretary Sergei Lavrov has said the Ukrainian region of Crimea means more to Russians than the Falklands mean to British people.
He said the planned referendum in Crimea is in line with international law - a claim which US and EU leaders dispute - and argued that the region should be treated similarly to Kosovo, which was unilaterally declared independent from Serbia in 2008.
Mr Lavrov also flatly rejected reports which emerged today claiming that the Kremlin is planning to invade eastern Ukraine. He said Moscow has "no plans" to undertake such an operation.
The son of former footballer Ossie Ardiles says he feared the worst for his father after they were both involved in a car accident in the Falklands.
"I thought he was in big trouble to be honest with you," Federico Ardiles said, after seeing the large gash on his father's head.
The former Tottenham star has had some stitches and is likely to be airlifted to a hospital in Buenos Aires for a precautionary scan, Federico added.
Former Argentina and Tottenham footballer Ricky Villa has described the moment his friend Ossie Ardiles lost control of the car they were travelling in, sending the vehicle rolling off the road:
Ossie Ardiles has sustained severe lacerations to the head, but is progressing well, after being involved in a car crash in the Falklands with former Argentine footballer Ricky Villa.
In a statement released by the Falklands Government, the former Spurs player and manager said: “Thank you to everyone in the Islands who has helped, without exception.
"Thank you to everyone for your concern, I am fine and doing well.”
My understanding is he [Ardiles] is fine. He has 20 odd stitches in his head and my understanding is he has been hospitalised overnight.
But he's fine. Ricky Villa and my brother were out there but they are okay.
Tottenham Hotspur FC has released a statement following the news that Ossie Ardiles and Ricky Villa were involved in a car accident.
Ardiles, who is also former manager of Newcastle United, and Villa spent 15 years on the playing staff at Tottenham between them.
"All at the club wish Ossie Ardiles and Ricky Villa speedy recoveries after they were involved in a car accident in the Falklands on Monday evening.
"We have been in touch with Ossie's friends and relatives and have been informed that both Ricky and he were fine, and that Ossie suffered a cut to the head that required stitches, but he remained conscious throughout. Ossie remains in hospital."
Former Argentina and Tottenham footballers Ricky Villa and Ossie Ardiles have been involved in a car accident on the Falkland Islands on Monday night.
The South Atlantic News Agency said the pair were on the island to film a documentary for ESPN.
A British military helicopter airlifted Ardiles and Villa, both 61, to a hospital in Stanley shortly after the accident occurred at around 9pm local time, according to the MinutoUno news site.
Four of the injured were discharged from hospital while three remain under observation, the report added.
Margaret Thatcher threatened to scrap a visit to Ireland because it was being "unfriendly" about the Falklands War, new records reveal.Read the full story ›
Comedian Jim Davidson said he is "delighted" that he will face no further action over an alleged historic sex offence in the Falkland Islands.The 60-year-old has been told that he will not be prosecuted over a claim that he assaulted a woman while he was on a trip to entertain troops in the 1980s.
His solicitor Henri Brandman said: "My client, Jim Davidson, is delighted to have received news today that there will be no further action relating to an allegation of an historic sexual nature in the Falkland Islands.
"I will not be making any further comment on his behalf."