Argentinian President Alberto Fernandez will travel to Brasília on Tuesday to meet his Brazilian counterpart Luiz Inacio Lula da Silva, government sources from both countries told AFP on Friday (28 April).
The program for this trip has not been specified.
On Thursday, the two left-wing heads of state met by videoconference to discuss, among other things, the return of Argentina and Brazil to the Union of South American Nations (Unasur).
Unasur was created in 2008 during Lula's second term and originally comprised 12 countries, most of them led by the left.
Several, including Brazil and Argentina, then left this regional organization after the return to power of the right in their country.
Brasília and Buenos Aires recently announced that they will rejoin Unasur, joining Bolivia, Guyana, Suriname and Venezuela as well as Peru, which is currently suspended.
Lula's return to power in January, following his electoral victory against his far-right predecessor Jair Bolsonaro, marked the resumption of Brazil's efforts for regional integration.
The Brazilian president had chosen his neighbor and ally Argentina for his first trip abroad, and Brasília has already rejoined the Community of Latin American and Caribbean States (Celac, 33 member countries) from which Jair Bolsonaro had left him.