Russia blocked a resolution at the United Nations Security Council on Monday that would have pressured Iran over the illegal use of Iranian-made missiles by Houthi insurgents in Yemen. The Russian veto drew angry rebukes from the United States and its allies.

The resolution, which would have easily passed the 15-member Council, also had been intended to renew an expiring United Nations arms embargo against the Houthis and the mandate of a panel of experts that found Iran had violated it.

Despite the rancor over that resolution, which was drafted by Britain and strongly backed by the United States, the Council then unanimously approved a Russian-drafted resolution that renewed the embargo and the panel’s mandate. That resolution conspicuously avoided the issue of Iranian weapons in Yemen.

The United Nations has called the nearly three-year-old civil war in Yemen the world’s worst man-made humanitarian disaster. Millions of Yemenis have been displaced, a majority of the population lacks food and aid agencies have struggled to supply assistance.