Nigeria, Dec. 11 -- The United Nations, in turning 80, has been berated, dismissed and libelled. In September, US President Donald Trump took a hearty swipe at the body's alleged impotence. "What is the purpose of the United Nations?" he posed to gathered world leaders. All it seemed to do was "write a really strongly worded letter and then never follow that letter up. It's empty words and empty words don't solve war." Never once did he consider that many of the wars he has allegedly ended have not so much reached their pacific terminus as having gone into simmering storage.

While harsh geopolitics has become violently fashionable and sneery of international law, an organisation whose existence depends on solidarity, support and cooperat...