More than halfway through the United Nations climate talks in Baku, Azerbaijan, negotiators from nearly 200 countries remain far apart on a number of the key issues up for debate.

As nations try to agree on a plan to provide potentially trillions of dollars to developing countries suffering from the effects of climate change, divisions remain over how much money should be made available, what kind of financing efforts should count toward the overall goal and how recipient countries should gain access to the funds.

Negotiations often go into overtime. But with just four days to go, many attendees fear that this could be the first summit since the Copenhagen talks in 2009 to conclude without a deal.

“There is a high risk this could collapse,” said a senior negotiator for a major European country, who requested anonymity because they were not authorized to speak publicly.

Simon Stiell, the United Nations climate chief, pleaded on Monday with countries to stop fighting and to reach a deal.

He warned against a dynamic “where groups of parties dig in and refuse to move on one issue, until others move elsewhere.” He added, “This is a recipe for going literally nowhere.”

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