G20 leaders gather in Brazil for a summit dominated by differences over wars in the Middle East and Ukraine, as well as the implications of Donald Trump's return to the White House. Security concerns are high following a failed bomb attack outside Brazil's Supreme Court. The summit will be held in Rio de Janeiro, with President Luiz Inacio Lula da Silva using the opportunity to highlight his position as a leader championing Global South issues. The leaders will also discuss climate change and the fight against hunger, while conflicts in Ukraine, Gaza, and Lebanon will be major topics of discussion.