With the post-world war international institutions eroded and under threat, a “strong and united Europe” standing alongside the United Nations, has never been more essential, said UN chief António Guterres in Germany on Thursday. The Secretary-General was in the ancient continental capital of Aachen, close to the French border, where he received the Charlemagne Prize, awarded each year since 1950, for services towards European unification. UNU was represented at the event by senior officials fro...