The most important thing to understand is where the value of the US dollar comes from. It's the US military. More generally speaking, it's US foreign policy. The US military is the force that enables foreign policy.

Understand this and you'll avoid falling into various traps and conspiracy theories. For example, there are people who believe that the US invasion of Iraq was caused by Iraq wanting to sell oil in euros instead of dollars.

This is a nonsen theory because every oil transaction could be denominated in euros tomorrow and it wouldn't change anything. The same demand for US dollars would still exist so people would simply convert to euros, buy oil then convert back.

This same understanding debunks the "threat" of a BRICS alliance.

The real problem, if you can call it that, is we have an administration who is both incredibly inept AND intent on destroying the post-WW2 world order. Wealth inequality is getting so bad and the deficit is so bad. Worse, nobody expects either to improve anytime soon. I'm not saying the budget needs to be in balance. It doesn't. A country doesn't work like a business when you can print your own money. But at some point, crippling public debt (in terms of GDP) will devalue the dollar.

Put another way: the illusion of "safety" is at risk. It's just a question of when the vibes shift.