GERMANY OWNS no nuclear weapons. It renounced the very idea when it reunified in 1990. But if war were to break out in Europe today, German pilots could clamber into German planes, take off from Biichel Air Base in Rhineland-Palatinate and drop nuclear bombs on Russian troops. The Luftwaffe can do that thanks to nato's nuclear-sharing scheme, under which America quietly stations nuclear bombs across five countries in Europe. The arrangement is decades old. But it has raised questions for some time-and clashes involving one of those nuclear hosts, Turkey, are making matters worse. As nato leaders gather in London for a summit next week, Turkey's bombs will be on many minds.
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