The twin developments showed that despite backing from the United States under President Trump and Saudi attempts to build international support in an escalating conflict with Iran, the kingdom’s human rights record — and, in particular, the conduct of its de facto ruler, Crown Prince Mohammed bin Salman — remains under harsh scrutiny on multiple fronts.

A group of experts, assigned by the United Nations Human Rights Council, has documented atrocities committed by both sides in Yemen’s civil war, and in particular the shattering impact on civilians of airstrikes and other abuses by the Saudi-led coalition fighting the Houthi rebels. The investigators, barred from entering Yemen, have interviewed hundreds of victims and witnesses, and examined an array of other evidence.