Last night, a Boeing 767 that was supposed to fly 130 asylum seekers to Rwanda returned to Spain without a single passenger on board. Throughout the day, the number of people planned for that flight had been whittled down by multiple legal challenges. Then, minutes before take-off, the European Court of Human Rights made an injunction stopping an Iraqi man known as KN from being taken to Central Africa because, it said, he faced ‘a real risk of irreversible harm’.