efe-epaBy Raúl Casado Madrid

The UN Climate Change Summit prepares to enter a decisive week - the high-level phase - amid much uncertainty on the negotiating table and a focus on leaders who aren't attending - but who still influence - the agreements discussed at the major conference.

Over the coming days much of the media attention will be on leaders in the fight against climate change like Swedish teen activist Greta Thunberg and former US vice president and Nobel laureate Al Gore. EFE-EPA