1. This mindset is a result of American hegemony. Before WW2, before the 90s really, no one thought this was a possibility.
2. Right but if it is dependent on a foreign nation for something vital that means it no longer can confidently assert its independence
3. Don’t disagree at all
The world has had interdependencies since trade began centuries ago. If a nation was independent, it usually meant that they had nothing anyone else wanted, and they were almost always poorer for it. And interdependency is good for peace: you don’t generally get into wars with your trading partners.
Independence is a stupid goal that’s promoted by selfish small-minded people who don’t understand how the world is better off when people trade.