BAKU, Azerbaijan: A group of former leaders and climate experts said the annual UN COP climate talks were no longer fit for purpose and needed to be reformed, publishing a critical open letter mid-way through what has so far been a fractious summit. Nearly 200 countries are gathered in Baku, Azerbaijan, with a primary goal of agreeing a new target for how much money needs to be provided to help developing countries adapt to climate change and recover from destructive weather. So far those talks