The U.N. climate agency on Saturday published an updated draft of a proposed final agreement for the COP27 summit, fleshing out some key parts of the deal countries are struggling to reach. The document, which forms the overall political deal for COP27, would need approval from the nearly 200 countries at the climate summit in Egypt. Negotiators will spend the next few hours studying the texts and deciding whether they can back them. The so-called ‘cover decision’ sits alongside a host of other agreements still subject to intense negotiation a day after the summit was due to have closed. The d…