The warning came as British Labour Party leader Jeremy Corbyn condemned British support for a U.S.-and-U.K.-backed, Saudi-led bombing campaign in Yemen, which has killed over 10,000 people, spawned a massive cholera epidemic and put 7 million people on the brink of famine. In a public letter, Corbyn urged Prime Minister Theresa May to “lift the Saudi blockade in order to stop this already catastrophic humanitarian crisis becoming one of the worst combinations of famine and disease since the 1980s, with millions of innocent people, especially children, at risk of death.”