World leaders have gathered in Rio de Janeiro for the annual G20 summit, with host President Luiz Inácio Lula da Silva prioritizing the launch of a global alliance against hunger and poverty. The summit occurs amidst a complex geopolitical landscape, as delegates navigate uncertainties regarding future international trade and environmental policies. Key agenda items include a proposed global tax on billionaires and the expansion of financial aid for climate-vulnerable nations. While some member states remain divided over specific funding mechanisms and language concerning regional conflicts, organizers expressed optimism that a joint declaration can be reached. The meeting is seen by observers as a critical test for multilateralism as the world's largest economies seek common ground on sustainable development and economic stability.