No it doesn't. But making efforts to stop it ourselves is necessary to achieve that. Same reason it's worth doing nuclear disarmament: because not disarming guarantees nuclear war eventually.
My interpretation of the parent comment is: Americans should stop aggressing other countries, slaughtering the population, and then publishing scientific breakthroughs on treating ptsd among the killers.
I'd say the comment says nothing about wars of survival, which is not what veterans have ptsd for. No one is 'doing war' at America.
Nash equilibrium is the religion for millennials who didn’t get sucked into the boomer/gen-x Ayn Rand bullshit