> I don't recall us bombing Pakistan, India, Israel, China, or North Korea.
pakistan and india did it in secret.
incidentally, its alleged that one of the countries on that list killed a very prominent american in order to prevent us from stopping them from creating a nuclear program.
India had quite advanced nuclear program even in 1940s, with Indian nuclear scientists working with scientists from UK and Canada.
"Following the atomic bombing of Hiroshima in August 1945, R. S. Krishnan, a nuclear physicist who had studied under Norman Feather and John Cockcroft, and who recognised the massive energy-generating potential of uranium, observed, "If the tremendous energy released from atomic explosions is made available to drive machinery, etc., it will bring about an industrial revolution of a far-reaching character." He further noted, however, the difficulties in harnessing nuclear power for peaceful usage, "...a great deal more research work is needed before atomic power can be put to industrial use."
"In March 1946, the Board of Scientific and Industrial Research (BSIR), under the Council of Scientific and Industrial Research (CSIR), set up an Atomic Research Committee under Bhabha's leadership to explore India's atomic energy resources and to suggest ways to develop and harness them, along with establishing contacts with similar organisations in other nations."
https://en.wikipedia.org/wiki/Nuclear_power_in_India
US didn't much opose the nuclear programs in Pakistan and Israel (probably even supported nuclear program in Israel).
https://en.wikipedia.org/wiki/Apollo_affair
US bombed North Korea a lot.