Regarding "the need for countries to project power"- I was recently reading Carl Sagan's
The Demon-Haunted World. I quote from chapter 16 "When scientists know sin":
From my point of view, the consequences of global nuclear war
became much more dangerous with the invention of the hydrogen
bomb, because airbursts of thermonuclear weapons are much
more capable of burning cities, generating vast amounts of smoke,
cooling and darkening the Earth, and inducing global-scale
nuclear winter. This was perhaps the most controversial scientific
debate I've been involved in (from about 1983-90). Much of the
debate was politically driven. The strategic implications of nuclear
winter were disquieting to those wedded to a policy of massive
retaliation to deter a nuclear attack, or to those wishing to
preserve the option of a massive first strike. In either case, the
environmental consequences work [to] the self-destruction of any
nation launching large numbers of thermonuclear weapons even
with no retaliation from the adversary. A major segment of the
strategic policy of decades, and the reason for accumulating tens
of thousands of nuclear weapons, suddenly became much less
credible.
This "need to project power" is just another way to say we're too goddamn stupid to use the technology we create without blowing ourselves, and everyone else, up with it. Democracy has nothing to do with it. Raw, unmitigated human stupidity dominates military decisions in every country.