The South African rand weakened in early trading after officials in Pretoria signaled they may bring back limits on short-term capital outflows to protect foreign reserves. The move comes as markets assess the economic effects of ongoing BRICS expansion talks ahead of the bloc's next summit.

The currency slipped more than 1%, reflecting investor concern that fresh controls could reduce liquidity and make it harder for funds to move in and out of the country. Brazil's real also fell, adding to broader volatility across emerging-market currencies.

Market participants are watching whether South Africa will move from signaling to policy action. Any new restrictions would likely be framed by authorities as a safeguard for financial stability, but traders may see them as another sign of pressure in a fragile external environment.

The episode underscores how geopolitical alignments and domestic economic policy can collide in currency markets, especially when governments try to defend reserves while maintaining investor confidence.