Human Rights Watch says a leaked United Nations report contradicts Britain's rationale for selling weapons to Saudi Arabia, pointing out that it says the Saudis as well as their adversaries violated international humanitarian law.

David Mepham, the UK Director of Human Rights Watch, said Wednesday the report's findings "flatly contradict repeated statements made by British ministers about the actions of the Saudi-led coalition in Yemen."

He says that "for almost a year, (Foreign Secretary) Phillip Hammond has made the false and misleading claim that there is no evidence of laws of war violations by the U.K.'s Saudi ally and other members of the coalition."

He added that the report shows the violations are frequent and widespread, including attacks on medical facilities, schools, mosques and populated residential areas.