Trade ministers from nearly every country in the world gathered in Abu Dhabi on Monday for a World Trade Organization meeting that aims to set new global commerce rules, but even its ambitious chief Ngozi Okonjo-Iweala sought to curb expectations.

The almost 30-year-old global watchdog, whose rules underpin 75% of global commerce, tries to strike deals by consensus, but such efforts are becoming more difficult amid signs that the global economy is fragmenting into separate blocs.

"Let's not pretend that any of this will be easy," Ngozi Okonjo-Iweala said in his opening speech, describing the atmosphere as "tougher" than the WTO's last 2022 meeting, citing wars, tensions and elections and signs that trade growth will undershoot the body's own estimate.