Longest UN climate talks end with no deal on carbon markets, UN chief 'disappointed'

The longest UN climate talks ended here on Sunday with no deal on carbon markets as delegates from almost 200 countries failed to come up with more ambitious targets to cut greenhouse gases to fulfil the terms of the 2015 Paris agreement, prompting UN chief Antonio Guterres to lament a "lost opportunity" to fight global warming.

The two-week long negotiations which extended till Sunday saw no agreement on major issues such as Article 6, loss and damage, and long term finance.

Under the Article 6 of the Paris agreement signed in 2015, the countries had agreed to set up a global carbon market system to help developing countries decarbonise their economies at lower cost. However, the countries have tried and failed to agree the rules governing this mechanism.

Despite holding the longest climate talks ever in 25 nearly annual editions, the sleep-deprived negotiators left one of the thorniest issues for next summit in Glasgow - how to deal with carbon emissions.

"I am disappointed with the