Very unlikely, for the simple reason that the US built the bomb. If Nazi Germany had not capitulated in May '45, it would have had one or several of its cities

Very unlikely, for the simple reason that the US built the bomb. If Nazi Germany had not capitulated in May '45, it would have had one or several of its cities leveled by some nukes. The outcome of the war would have been the same, with the possible exception that Eastern Europe would not have fallen under Soviet influence.