G20 leaders gather in Brazil on Monday to discuss fighting poverty, boosting climate financing and other multilateral initiatives that could yet be upended by Donald Trump's impending return to the White House.

The plea, made in a letter to G20 leaders from top U.N. climate official Simon Stiell, comes as negotiators at the COP29 conference in Baku struggle for a deal intended to scale up money to address the worsening impacts of global warming.

Diplomatic tensions over global warming will take centre stage at the G20 summit in Brazil this week. Heads of state arriving in Rio de Janeiro on

UN head calls for leadership from G20 countries on global conflicts:::: Rio de Janeiro, Brazil:: Antonio Guterres, UN Secretary-General“And I have come to Rio with a simple message: G20 leaders must lead and G20 countries,

Nations return to deadlocked UN climate talks Monday, with hopes that G20 leaders meeting on the other side of the world can rally support behind a deal for poorer countries. Pressure is mounting on G20 leaders to throw their weight behind the stalled process when they meet in Brazil for their annual summit.

Terming bolder climate action as “self-preservation for every G20 economy”, UN climate chief Simon Stiell on Saturday urged the grouping’s leaders headed to Rio de Janeiro to carry out rapid cuts in emissions to prevent climate-driven economic carnage.

UN Secretary-General Antonio Guterres on Sunday called on G20 leaders gathering in Rio de Janeiro to rescue stalled concurrent UN climate talks in Azerbaijan by showing "leadership" on cutting emissions.