The President COP26Sunday’s statement stated that India and China will have to justify why the crucial passage of the U.N.-brokered Climate Deal was lost.

Alok Sharma (UK lawmaker), who was in charge of the COP26 negotiations told Andrew Marr that India and China would have to justify their actions to some of the most vulnerable countries around the globe.

The day comes after. nearly 200 countries agreed on a dealAfter two weeks in Glasgow, Scotland, talks, we are determined to stop the worst impacts of climate change.

The wide-ranging agreement, which is not legally binding, was amended at the eleventh hour after interventions from India and China — both among the world’s biggest burners of coal. The language used to describe fossil fuels has changed. Now the agreement refers to “phase down” coal rather than “phase out”, as was originally suggested.

Owing countries eventually accepted the amendment after initial protests.

Sharma said that “Over the last weeks clearly there were some countries that didn’t want to have coal-language in this compact.”

“But, at the end the day this is the first ever time that we have a language regarding coal in a decision of the COP. That is historic, I believe.”

Sharma, speaking to CNBC on Saturday, acknowledged that there is “certainly more to be done” in this area.

He said, “When we assumed the presidency of COP,” in response to a question during a press conference after the agreement.

“If I had said that at the time that we will no longer finance international coal projects, and that we managed to reach the kind of agreement that we have, people would be skeptical,”

He said, “There is absolutely progress. Do we need to move faster? “Yes.”

The climate conference is open to all world leaders, campaigners and environmental activists representing those most threatened by climate change called for urgent actionLimit global warming to 1.5° Celsius below preindustrial levels.

It is feared that an even more severe rise in temperature will adversely impact vulnerable populations, such as small islands nations around the globe which are being flooded by rising sea level. Simon Kofe is the Tuvalu foreign minister, an island off the South Pacific. delivered his speech to COP26 standing knee-deep in the ocean.

Sharma insists that the agreement reached at COP26 is a 1.5 degree Celsius increase, which Sharma believes “is within reach.” However, independent analysis by Climate Action TrackerThis indicates that even if all pledges were met, they are insufficient. Even if all the pledges were met, it is estimated that global greenhouse gas emissions by 2030 will still be twice what’s needed to reach the 1.5 degree goal.

This threshold temperature refers to the 2015 Paris Agreement’s aspirational goal. The world needs to keep the average temperature below this level for the next 8 years, and then reach net-zero emissions for the year 2050. The climate crisis will only get worse. It’s crucial to stop it from becoming worse.

The COP26 agreement has received mixed reactions so far. Jennifer Morgan, the executive director of Greenpeace International, said via Twitter that it only just manages to keep the 1.5 Celsius goal alive, adding that “a signal has been sent that the era of coal is ending — and that matters.”

—CNBC’s Sam Meredith contributed to this article.