Relations between South Africa and the US — its second-biggest trading partner after China — have soured over Pretoria’s insistence that it is taking a non-aligned stance toward Russia’s war in Ukraine. Even so, South Africa participated in naval exercises with Russia recently, while officials of the ruling African National Congress have expressed support for Russia’s invasion of Ukraine.

State Department spokesman Vedant Patel wouldn’t be drawn on whether the US would consider sanctions against South Africa should the arms claim prove true, but added during a regular State Department briefing Thursday that the US had “serious concerns” about a sanctioned Russian vessel docking in a South African port.

“The political stakes are high, with trade deals and market access all now in question,” economists at Rand Merchant Bank wrote in a client note. “This will add an additional layer of risk until the debate around this has cleared, and the rand should reflect that risk premium.”

Eoin Treacy's view

Eskom’s challenge in keeping the lights on pales into insignificance relative to the threat of forcing countries to pick sides in the new geopolitical landscape. Selling arms to Russia is not exactly remaining unaligned. Of course South Africa could argue they are equally willing to sell arms to Ukraine. Nevertheless, from NATO’s perspective, depriving Russia of resources is essential to the path to ending the conflict so South Africa’s nonconformity is likely to be viewed very negatively.