When it assumed the presidency of the G20 last year, South Africa hoped that as the first African country to host the gathering of world leaders, it could champion issues that mattered the most to developing nations.
For instance, it wanted the 20 heads of state from the world's biggest economies to consider arguments that borrowing should be cheaper for developing countries, which pay two to four times more in interest on debts than more advanced economies.
Other themes of this weekend's summit include securing climate change financing, increasing the participation of African countries in multilateral forums, and ensuring that they get the best value out of their critical minerals.
But so far, discourse surrounding the meeting has been dominated by Donald Trump's very public decision not to attend.
The US president said he would not go due to the widely discredited claim that South Africa's white minority is the victim of large-scale killings and land grabs.
The relationship between the two countries has become increasingly fraught over the past year - the US expelled the South African ambassador to Washington, cut some of its aid funding, and slapped South Africa with tariffs of 30% (the highest rate in sub-Saharan Africa).
And finally, after initially saying he would send Vice-President JD Vance to the G20 summit, Trump abruptly announced two weeks ago that no US representatives would attend.
The government in South Africa's capital, Pretoria, has tried to maintain a defiant but diplomatic tone. It has firmly denied claims of a white genocide and insisted that the summit would proceed with or without the US.
In a sudden about face, and with less than 48 hours to go before the G20 conference, the US announced that it would be sending a small team of its in-country diplomats to the handover ceremony, but that it wouldn't take part in any discussions. South Africa's Finance Minister, Enoch Godongwana, told reporters earlier this week that there's only one way they would not attend next year's meetings: We are members of the G20, we're not an invited country. So we don't need an invitation from anybody.
So will South Africa manage to reach its aims without the presence of the world's wealthiest nation? Professor Richard Calland, from the Cambridge Institute for Sustainability Leadership, thinks it can. Ironically, the absence of President Trump may create more space for real consensus, because people won't be constantly looking over their shoulder at him and trying to anticipate or navigate his conduct and his positioning.
However, unlike the US, all of these countries are sending senior delegations to represent their countries' interests.
Mr Lamola was keen to downplay the significance of these absences, stating that sometimes the heads of state are not able to attend major events, and it is nothing abnormal for them to send a replacement.
Other global powers have expressed their support of South Africa's presidency of the G20, including France, the UK, and the European Union, which signed a deal with South Africa agreeing to boost the extraction and processing of critical minerals.
As South Africa concludes its G20 presidency, the world's attention remains on how it navigates the complex landscape of global diplomacy amidst significant absences at this pivotal gathering.
