The UN's climate chief on Monday told countries at the deadlocked COP29 summit to "cut the theatrics", as pressure mounts on G20 leaders to deliver a breakthrough.

A University of Dundee academic is calling for ‘less talk and more action’ from COP29, as he prepares to attend the global climate change conference as a negotiator later this month

The U.N.'s climate chief called on leaders of the world's biggest economies on Saturday to send a signal of support for global climate finance efforts when they meet in Rio de Janeiro next week, to help trigger a deal at COP29 talks.

Nations returned Monday to the negotiating table at deadlocked UN climate talks in Azerbaijan, but with time running out hopes of a breakthrough are pinned on G20 leaders meeting in

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.

Negotiations were deadlocked Saturday at the midway point of the UN climate summit, with hopes pinned on G20 leaders intervening to strike a critical finance pact at the crunch talks.

With negotiations on climate finance in Baku at a standstill, leaders are turning to the G20 meeting in Brazil for a breakthrough .