Spain has canceled plans to deliver 400 laser-guided bombs to Saudi Arabia, over concerns about the U.S.-backed, Saudi-led assault on Yemen, which has fueled the world’s worst humanitarian crisis. A Spanish Defense Ministry spokesperson confirmed reports that Spain will return some $10 million already paid by Saudi Arabia for the weapons. The U.N. says the Saudi-led assault has spawned a massive cholera epidemic that’s sickened over a million people while bringing millions more to the brink of famine. Last month, Republican leaders quashed an amendment offered by U.S. Senator Chris Murphy that would have cut off U.S. support to the Saudi-led coalition.