Experts have raised concerns about potential risks Barakah plant could pose to the environment and regional security.

The United Arab Emirates (UAE) announced on Saturday that it has started operations in the first of four reactors at the Barakah nuclear power station - the first nuclear power plant in the Arab world.
Emirates Nuclear Energy Corporation (ENEC), which is building and operating the plant with Korea Electric Power Corporation (KEPCO) said in a press release that its subsidiary Nawah Energy Company "has successfully started up Unit 1 of the Barakah Nuclear Energy Plant, located in the Al Dhafrah Region of Abu Dhabi".
That signals that Unit 1, which had fuel rods loaded in March, has achieved "criticality" - a sustained fission chain reaction.
"The start-up of Unit 1 marks the first time that the reactor safely produces heat, which is used to create steam, turning a turbine to generate electricity," said ENEC.
Barakah, which was originally scheduled to open in 2017, has been dogged by delays and is billions of dollars over budget. It has also raised myriad concerns among nuclear energy veterans who are concerned about the potential risks Barakah could visit upon the Arabian Peninsula, from an environmental catastrophe to a nuclear arms race.