The Sun has posted an advert in a Buenos Aires newspaper to "hit back" at the Argentine president over her letter about the Falkland Islands to David Cameron.
The newspaper's response, published in Spanish and English, was addressed to President Cristina Fernandez de Kirchner.
The Sun claims, in an open letter in today's Buenos Aires Herald, that Britain has had sovereignty in the Falklands before Argentina even existed.
More top news
A woman involved in a car crash had to be taken to hospital by helicopter with serious injuries.
Search for missing seven-year-old underway after he was reportedly abandoned in a forest by his parents as "punishment" for throwing rocks.
Shooting of a 400-pound gorilla who grabbed a four-year-old boy after he entered his enclosure sparks public outrage and prompts petition.