The U.S. is due to officially exit the World Health Organization on Thursday, in the face of warnings it will hit both U.S. health and global health and also in violation of a U.S. law that requires Washington to pay the U.N. health agency $260 million in ?fees that it owes.

U.S. President Donald Trump gave notice that his country would quit the organization on ?the first ?day of his presidency in 2025. Under U.S. law, it has to a give one-year ?notice and pay all outstanding fees before departure.

Over the last year, many global health experts have urged a rethink, including most recently WHO Director General Tedros Adhanom Ghebreyesus.