Suppose we stop throwing trillions at war machinery. Am not certain that any particular technology, or even social expenditures, would ever enable "love and peace".

Probably just 10% of the annual DoD budget bent towards education of girls and women and for free global birth control would stop our insane population growth. Slow growth is the only hope for the planet. Do not see how not funding weapons without the global education of females will fix anything. The root cause is not too many weapons systems, it is too many people.