反转！特朗普，刚刚同意了！

Group 1 - The article discusses the recent agreement between US President Trump and South African President Ramaphosa for the US to participate in the G20 summit in November, which is seen as a shift in the US's stance towards multilateral institutions and may help ease tensions between the two countries [1][2][3] - The G20 summit will take place in Johannesburg, South Africa, marking the first time an African nation has held the G20 presidency, which South Africa assumed on December 1 of the previous year [2] - Tensions between the US and South Africa have been high, particularly after Trump's criticism of South Africa's land reform policies and accusations of racial discrimination, leading to a cut in US aid to South Africa [2][3] Group 2 - The article highlights Trump's recent critical remarks about Russian President Putin, indicating a significant change in Trump's attitude towards Russia, as he expressed disappointment over the lack of a ceasefire in the ongoing conflict with Ukraine [4][5] - Trump's comments about Putin included accusations of "playing with fire" and labeling him as "crazy," reflecting a growing frustration with Russia's military actions in Ukraine [4][5] - The article also notes that the Russian government responded to Trump's criticisms, suggesting that his remarks were emotionally charged and that Russia's military actions were retaliatory in nature [5]