A refugee is the person the state system was not built to accommodate: someone whose own country has become the danger, crossing a border with no automatic right to stay. The 1951 Refugee Convention fixed the definition — well-founded fear of persecution, cannot safely return — and the central rule: do not send anyone back into the danger they fled. The subject pits two real goods against each other: a duty to protect the persecuted, and a nation's right to control its border. How to honor both when millions press the claim is among the sharpest disputes in democratic politics.
A refugee is the one person the modern world is built to have no place for. The earth is divided into countries, and almost everyone is supposed to belong to one that will protect them. A refugee is what happens when that breaks: your own country has become the danger, or has collapsed, and no other country is obliged to give you a new home — though, under modern law, none may lawfully send you back into the danger you fled. After the Second World War, when memory was fresh of states that had turned away people fleeing the Nazis, the world wrote a rule to answer this. A refugee is someone with a well-founded fear of being persecuted who cannot safely go home, and such a person must not be sent back to the place of danger. That rule is widely affirmed. What to do when millions claim it, and how to tell the persecuted from the merely poor, is one of the most explosive questions in democratic politics.