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@ADreamOfLiberty
but if they were perfect and were perfectly enforced then no one would have a legitimate cause to make war on the government or other citizens.
People disagree on abortion, guns. People even disagree on religious liberty (with Muslim countries being against it). You are going to need something similar to the 10th amendment to get the Arab world to be on board (just like how the states got on board to unite in one country in the US). The 1st amendment would prevent the global government from imposing a religion. Anyone whom the Muslim countries oppress based on religion can move outside of the Arab world.
There is no need now, and they would still find plenty of excuses for huge bureaucratic waste that doesn't involve massive conventional warfare, just as they do right now.
Probably not $1.6 trillion worth spent on murder (current global military spending). Maybe India gets some more toilets so they are less of a shithole. Maybe kids get better education in better funded schools (where they become fluent in English) and they get out of poverty and America benefits because our language spreads around the world.
Neither are perfect democracies, Israel is much more democratic, and there is nothing in the concept of democracy that prevents genocide.
Palestine would either have elections as free as Sweeden, or anyone objecting to how Palestine is run can move to Sweeden for democracy and elections. People use the word, "democracy" loosely. But every country should have regular elections.
Just like the Taliban are playing dress up and dotting their Ts Hamas could be all formal about it and then start rounding up all dissenters for the gas chambers.
If Palestine annexed Israel, then they would annex a population half Jewish. You can't genocide half the population. There is strength in numbers.