According to the agency Prensa Latina, Kirchner's statement, which was made earlier this week, came amid the ongoing election campaign of Daniel Scioli, Argentina's presidential candidate from the ruling Frente para la Victoria (Front for Victory) party.
Lula da Silva backs Scioli, who is expected to become Kirchner's successor given that Argentine law prevents her from running for a third term.
At the time, experts argued that it was too early to speak of Argentina entering BRICS because the country was in a state of technical default due to the refusal by a number of hedge funds to accept the restructuring of Buenos Aires's public debt.
On Thursday, however, the UN General Assembly approved a new non-binding resolution aimed at creating a new legal framework for restructuring national debt. The resolution sets nine principles for restructuring national debt, urging debtors and creditors "to act in good faith and with cooperative spirit."
Whereas the four original BRICS nations are ranked by the United Nations and IMF as being among the world's ten largest economies in terms of nominal GDP, South Africa ranks 33rd, far below Argentina. However, South Africa controls key mineral resources.
Meanwhile, Sudan has signaled its readiness to act as an observer state within BRICS, which has significantly increased its international clout in the past couple of years.
