Because that’s not how a functional society works. If Texas wanted to secede from the USA the whole USA would have to be called in this decision. You can’t do what Puidgemont did in Catalunya, call for a referendum in the specific region, count the votes and declare independence from the central government. You are part of the government, if you want to secede this must be a common choice.
If you were an adult you might understand this with a (non-perfect) similitude with divorce: you cannot divorce by yourself, you need to sign the documents as a couple for divorce to take place.
That’s also why Russia’s claim of annexation of the Ukrainian regions has no value for the international law, it’s a faux secession with no bearing on the Ukrainian national rights
Because that’s not how a functional society works. If Texas wanted to secede from the USA the whole USA would have to be called in this decision. You can’t do what Puidgemont did in Catalunya, call for a referendum in the specific region, count the votes and declare independence from the central government. You are part of the government, if you want to secede this must be a common choice.
If you were an adult you might understand this with a (non-perfect) similitude with divorce: you cannot divorce by yourself, you need to sign the documents as a couple for divorce to take place.
That’s also why Russia’s claim of annexation of the Ukrainian regions has no value for the international law, it’s a faux secession with no bearing on the Ukrainian national rights