The planes, made by Boeing, have been implicated in the bombing of three Doctors Without Borders (Médicins Sans Frontieres, or MSF) facilities. The U.N. Secretary General has decried “intense airstrikes in residential areas and on civilian buildings in Sana’a, including the Chamber of Commerce, a wedding hall and a centre for the blind,” and has warned that reports of cluster bombs being used in populated areas “may amount to a war crime due to their indiscriminate nature.”

Bombs dropped by fighter jets are pulverizing Yemen’s architectural history, possibly in violation of international humanitarian law.

A few years earlier, as secretary of state, Hillary Clinton made weapons transfer to the Saudi government a “top priority,” according to her closest military aide.

And now, newly released emails show that her aides kept her well-informed of the approval process for a 2011 sale worth $29.4 billion to Boeing of up to 84 advanced F-15SA fighters, along with upgrades to the Saudi’s pre-existing fleet of 70 F-15 aircraft, and munitions, spare parts, training, maintenance, and logistics.

The deal was finalized on Christmas Eve 2011. Afterwards, Jake Sullivan, then Clinton’s deputy chief of staff and now a senior policy adviser on her presidential campaign, sent her a celebratory e-mail string topped with the chipper message: “FYI – good news.”