Brazilian President Luiz Inacio Lula da Silva, hosting the G20 summit in Rio de Janeiro from Monday, will try to progress plans to tax the world's richest billionaires, who often use complex loopholes to avoid tax.

As leaders from the world's largest economies descend on Rio de Janeiro, here's what we'll be watching. The world’s largest economies are gearing up for the Group of 20 largest and emerging economies’ summit, a two-day affair that will bring some of global development’s most pressing issues to the center stage.

Brazil’s first lady Rosangela “Janja” da Silva on Saturday insulted Elon Musk, the billionaire owner of X, at an event ahead of the G20 summit in which she advocated tougher regulation of social media.