Overview
- The summit opened in Johannesburg with the U.S. seat vacant as Washington confirmed it will not take part in talks or endorse a consensus final document.
- U.S. representation is limited to chargé d'affaires Marc D. Dillard for the ceremonial presidency handover, which South Africa says will not be accepted from a low‑rank envoy.
- President Cyril Ramaphosa urged leaders to protect the G20's credibility and agree a joint declaration despite the boycott.
- European Union leaders sought to press trade and climate priorities in the power vacuum and convened discussions on Ukraine on the sidelines.
- Argentina is represented by Foreign Minister Pablo Quirno after President Javier Milei declined to attend in alignment with Washington.