Record UN climate talks in Madrid have ended in a compromise deal on cutting greenhouse gas emissions which left many disappointed.
Here are key quotes from leaders, experts and activists on the UN Climate Change Conference (COP25) outcome.
At the conclusion of UN climate talks in Madrid, BBC environment correspondent Matt McGrath considers the key lessons.
The negotiations this year were meant to nail down the outstanding issues in implementing the Paris climate agreement, but they came at an especially difficult time for many of the countries at the table. China, Chile, and France are facing civil unrest back home. The United Kingdom held a general election during the talks. And India faces a slowing economy.
One of the toughest negotiations was over a section of the Paris climate agreement known as Article 6 that governs international carbon markets.