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
Two lorry drivers have been sentenced after a fatal motorway crash that killed eight people.
Darren McKie strangled his wife Leanne with force equivalent to a karate chop before dumping her body in a lake.
Ant McPartlin was charged with drink-driving on Wednesday, following a crash on Sunday.