The head of one of the world's biggest oil companies has been named to lead the COP28 global climate talks in Dubai, later this year.

Sultan Ahmed Al Jaber is currently the chief executive officer of the Abu Dhabi National Oil Company.

Campaigners say he must stand down from his oil business role while president as it is a clear conflict of interest.

They believe someone steeped in the oil industry may not push countries to rapidly reduce their production and use of fossil fuel, which scientists say is critical to avoiding dangerous climate change.

Running the global climate talks process is not an easy job - for months before, and especially during the conference, every word and action of the president is heavily scrutinised.

COP28 is already mired in some controversy as the hosts, the United Arab Emirates, are one of the world's biggest producers of oil and gas.

The appointment of a key figure in the energy industry as the president-designate of COP28 will likely increase the concerns that the global climate talks process is facing significant influence from fossil fuel interests.