Assad’s invite, late on Monday, to the climate talks comes as the Syrian president already is scheduled to attend the Arab League summit this Friday in Jeddah, years after being frozen out of regional politics.

A brutal crackdown by Assad’s government on demonstrators in a 2011 Arab Spring uprising challenging his rule descended into a civil war and consequently became a regional conflict. The war has killed half a million people and displaced half of its population.

Assad’s invitation came in a letter from Emirati leader Sheikh Mohammed bin Zayed Al-Nahyan, Syria’s state-run SANA news agency reported.

The agency published images of Assad reading the letter alongside an Emirati diplomat in Damascus.

The UAE similarly had cut ties with Assad, only to slowly restore them in recent years.

Asked for comment, the Emirati office organizing the upcoming climate conference said in a statement that the event marked “a milestone opportunity for the world to come together, course correct, and drive progress toward keeping the goals and ambitions of the Paris Climate Agreement alive.”

“COP28 is committed to an inclusive COP process that produces transformational solutions,” the statement added. “This can only happen if we have everyone in the room.”

Syria is both a party to the Paris Climate Agreement, as well as the Kyoto Protocol. Scientists have linked a drought in Syria that began in 2007 to climate change, saying that it likely played a part in the conflict.

That company has plans to boost its production of both crude oil and natural gas, fossil fuels that produce more of the heat-trapping carbon dioxide that the UN negotiations hope to limit.

But the oil chief, Sultan Al-Jaber, has also helped oversee the Emirates pledging tens of billions of dollars toward renewable energy projects worldwide.

The Conference of the Parties — where COP gets its name — will be held at Dubai’s Expo City from Nov. 30 through Dec. 12.