Humanity’s most righteous military effort against a worldwide malevolent force would in theory end the need for war, not in a crystal commie kidfucker type of one world government way but a reasonably well adjusted and free society in which nations enjoy their heritage/culture and still partake in world commerce.
Legit banking, trade, etc for all nations,
Immigrants can go home if they want with clown shoe factory governance is wiped out worldwide, everybody wants to go home if they can be free and make a living.
Of course you gotta have a strong military to stamp out shitbags , but think of the things we could do with some of that wealth and energy when peace rules the day and the fucking pirates are swimming with the sharks, not pissing on the world’s parade all the time.
Be a real treat to see the world run on an honest ledger, no more nickel and dime happy horseshit syphoning the time/money from the people.