I do, however as the US is a federal entity, and most UN opponents fear a world government, my example is reasonably fair.
The U.S. is a country. It is a nation. The United States has 310+ million people living in it. I think your description of the United States as “a federal entity” is too simplistic.
Why don’t states secede? Because there isn’t enough will to do so.
I think I found a hole in your logic. You believe that the U.S. and U.N. are comparable (most would take exception to this, but you believe this). You also believe the U.S. should split into smaller entities. But, you don’t seem to believe that the U.N. should split into smaller entities.
Moreover, this is the problem. Something has to exist in the United States. There are 310+ million people here, there is a lot of land here, something has to exist, you are just offering alternatives (though they are currently unlikely, that is what you are doing).
Nothing has to exist in the place of the U.N. The U.N. is an idea. It doesn’t have land, it doesn’t have people. It just has a number of nations which subscribe to this idea, so those tangible nations give this intangible idea tangible things. The nations supply it with money, land, buildings, politicians, diplomats, bureaucrats, and lawyers.
The nations don’t have to do this. The U.N. doesn’t have to exist. Whereas, something certainly has to exist amongst the land and peoples currently occupied by the nation of the United States.
Young Ireland said:
3. If there are no checks on an individual country’s power, we effectively have a survival-of-the-fittest scenario that would benefit neither the invader or the invaded (this applies to any country).
There are checks on national power outside of the U.N.: Other nations, the Church, natural law. Even in the absence of the U.N. there are plenty of checks on national power. However, the argument can be made, and has been made on this thread many times, that the U.N. only
tries to be a check on national power. In reality, it is an abject failure, and historically it has a long record of failing to do anything to stop wars, genocide, etc.
P.S.
I wonder if your support for the U.N. has anything to do with hailing from a small country (Ireland), which ostensibly is not a gun-toting country. You see, America is a large country, and America is a gun-toting country. Why worry about the struggle of nations, when you have firearms?