Brazil is betting its much-hyped climate summit in the Amazon next month can deliver something increasingly rare in a fractured world: proof that nations can still unite to confront a global crisis.

It faces tough odds, with a hostile United States unlikely to show up, waning political appetite for climate action, and eye-watering prices for accommodation threatening turnout.

About 50,000 attendees are expected at the two-week COP30 conference starting November 10 in Belem, a poor northern city best known as a gateway to the Amazon rainforest.

On Monday, climate ministers and representatives of 67 countries began meeting in Brasilia ahead of the marathon UN negotiations that bring together nearly every nation for the most important climate talks of the year.

Brazil's Environment Minister Marina Silva highlighted the need to "prevent not just a point of no return for the planet's climate, but also for climate multilateralism -- increasingly in doubt amid the poor follow-through on past agreements."

UN Climate Change Executive Secretary Simon Stiell urged countries to "go that little bit further" in the lead-up to the main........

© International Business Times