At the United Nations climate talks in Baku, Azerbaijan, wars are top of mind for some leaders and activists who have converged to discuss ways to limit global warming.

The United Nations' COP climate talks are "no longer fit for purpose" and need an urgent overhaul, key experts including a former UN secretary general and former UN climate chief have said. In a letter to the UN, senior figures say countries should not host the talks if they don’t support the phase out of fossil energy.

Leaders on a panel with members of the High Ambition Coalition, a group of nations that want to see strong climate action, highlighted the “inverted morality” of big emitters who aren’t taking responsibility for their impacts on countries who have the most to lose.

World leaders converged Tuesday at the United Nations annual climate conference with plenty of big names and powerful countries noticeably absent.

For the third straight year, efforts to fight climate change haven’t lowered projections for how hot the world is likely to get - even as countries gather for another round of talks to curb warming, according to an analysis Thursday.