Milei sent his letter to the Russian and Chinese leaders several days ago and also informed South African President Cyril Ramaphosa, Brazilian President Luiz Inacio Lula da Silva and Indian Prime Minister Narendra Modi of his decision, according to the news portal.
Founded in 2009, BRICS is a grouping of the world's largest developing economies. The founding members of the bloc are Brazil, Russia, India, China and South Africa.
In August 2023, during the 15th BRICS summit in South Africa, Argentina, Egypt, Ethiopia, Iran, United Arab Emirates and Saudi Arabia were invited to join the bloc.
Their full membership is scheduled to take effect on January 1, 2024. Argentina's current president, Javier Milei, has repeatedly spoken out against joining BRICS.