I don't understand what you are looking for. There is no unified world government. There is no sovereign entity that controls all nations. That means any and all international interaction is roughly consensual.
If the US genocides a significant portion of their own populace, and nobody could muster up an army large enough to physically stop them, and nobody could blockade their trade enough to hurt them, then why would the US stop?
Accountability requires someone to execute the "punishment" or whatever. If you want international accountability, you REQUIRE an independent entity which all nations treat as a global government, one which as the ability to militarily slap anyone who doesn't fall in line. The UN isn't that, on purpose.
First problem: Where is the office for that world government? There is largely no land that is "outside" other countries.
The US literally experienced this "How do you get fiefdoms to cede their power to a common government" problem in 1787, and overcoming it took promising slave owners that they wouldn't outlaw slavery for at least 20 years, and hand out a massive power structure benefit to the states that had significant slavery. Of course the invention of the cotton gin just a few years later would destroy that possible outcome and set us on the path for the civil war.
If you invent a world government that could punish a country that was unruly, how do you convince the US or China to submit to it ENTIRELY? How do yo prevent this world government from simply being a tool of the US or China?
If the US genocides a significant portion of their own populace, and nobody could muster up an army large enough to physically stop them, and nobody could blockade their trade enough to hurt them, then why would the US stop?
Accountability requires someone to execute the "punishment" or whatever. If you want international accountability, you REQUIRE an independent entity which all nations treat as a global government, one which as the ability to militarily slap anyone who doesn't fall in line. The UN isn't that, on purpose.
First problem: Where is the office for that world government? There is largely no land that is "outside" other countries.
The US literally experienced this "How do you get fiefdoms to cede their power to a common government" problem in 1787, and overcoming it took promising slave owners that they wouldn't outlaw slavery for at least 20 years, and hand out a massive power structure benefit to the states that had significant slavery. Of course the invention of the cotton gin just a few years later would destroy that possible outcome and set us on the path for the civil war.
If you invent a world government that could punish a country that was unruly, how do you convince the US or China to submit to it ENTIRELY? How do yo prevent this world government from simply being a tool of the US or China?