I don't think this kind of sycophant understands the implications of using a nuke. This is not, in fact, 1945. The only reason the US got away with nukes in 1945 is because 1) the war was about to end anyway and 2) people did not have a suitable armed response for such an armageddon weapon, nor a very good understanding of them.
It is decades since, with plenty of nuclear proliferation across the globe. The idea of breaching that has no resemblance to Truman in 1945. Except for maybe that Truman was very racist and so is Trump.