Leaders of the Group of 20 major economies meet on Tuesday to discuss sustainable development and the transition to cleaner energy, as they aim to increase the odds of a successful deal to address global warming at U.

Britain's Prime Minister Sir Keir Starmer and other leaders of the G20 pose for a photo of the Global Alliance Against Hunger and Poverty at the G20 summit at the Museum of Modern Art in Rio de Janeiro, Brazil. Picture date: Monday November 18, 2024. Stefan Rousseau/Pool via REUTERS

Halfway through the negotiations there is plenty of frustration. But, according to our environment editor Fiona Harvey, there is also still hope

Chinese President Xi Jinping listens as U.S. President Joe Biden, not pictured, delivers remarks during an event launching the Global Alliance Against Hunger and Poverty at the G20 Summit at the Museum of Modern Art in Rio de Janeiro, Brazil on Monday, Nov. 18, 2024. Eric Lee/Pool via REUTERS

British Prime Minister Keir Starmer will meet Chinese President Xi Jinping on the sidelines of the G20 summit in Rio de Janeiro on Monday, his office said in a statement on Sunday. Starmer will call for Britain and other major economies to engage with China "pragmatically" on areas of mutual cooperation,

Sir Keir Starmer will meet Chinese President Xi Jinping at the G20 summit in Brazil, Downing Street has confirmed.