Using the atomic bomb, developed amid utmost secrecy, was hugely popular with war-weary Americans at the time - and 70 years on, a majority today still think it was the right thing to do.įifty-six percent of Americans surveyed by the Pew Research Center in February said using the atomic bomb on Japanese cities was justified, compared to 79 percent of Japanese respondents who said it was not. It would be another 27 days - plus a second nuclear mushroom over Nagasaki - before Japan surrendered, ending a war that began with its 1937 invasion of China and stretched across the Asia-Pacific region. 'They certainly don't care to have us drop any more bombs of atomic energy like this.'