Russia vetoed a United Nation resolution Monday calling for an immediate cease-fire between Sudan’s warring parties and the delivery of humanitarian aid to millions of Sudanese. Russia was the only Security Council member that voted against the cease-fire resolution. China, Russia’s ally, supported the resolution, drafted by the United Kingdom and Sierra Leone. Russian Deputy U.N. Ambassador Dmitry Polyanskiy told the council that Moscow vetoed the resolution because Sudan’s government should be “solely” responsible for what happens in Sudan. U.S. Ambassador Linda Thomas-Greenfield said, “It is shocking that Russia has vetoed an effort to save lives, though perhaps it shouldn’t