Leaders of the world's biggest economies must send a clear signal on the need to tackle global warming, COP29 climate summit host Azerbaijan said on Monday.The plea came as Group of 20 (G20) leaders met in Brazil with climate just one item on an agenda spanning war in Ukraine and the implications of Donald Trump's election victory.

G20 communique in Rio contains key lines on climate confirming world set to transition away from fossil fuels. In keeping with previous Cop summits in authoritarian countries, authorities in Azerbaijan appear to have made some limited allowances for civil society interventions during the conference.

Leaders of the world’s biggest economies confirmed their support to shift more cash to developing countries to help them cope with climate change.