The US Navy, Marines, and Army being able to defeat Japan on a shoestring was a large part of the reason mal isn't wurst or borscht. And Hiroshima and Nagasaki are large parts of why Japan surrendered before hundreds of thousands of Allied military personnel - active and POW - and more hundreds of thousands of Japanese military personnel and civilians were killed.
Hiroshima and Nagasaki were horrible because war is horrible. A person who died at Hiroshima isn't any more dead than a person who died during the bombing of another Japanese city, using conventional bombs. But to the degree Hiroshima and Nagasaki were last-straw shocks, those bombs saved far more people than they killed - lesser horrors that prevented far worse horrors.
Not that facts matter to mal there in her nice, safe gated compound or community in the midst of Jamaican poverty and crime.