Mexico will not join BRICs because they would then have to leave USMCA trade agreement. Cuba, your nearest neighbour, can do whatever it wants. The US does not get to dictate anymore by military might. They have done in the past. To do so today would bring other trade deals into conflict. The EU would be very against this. This does not mean the US cannot use its financial might, which it clearly does and often.
Also none of this factors in that joining NATO, by definition, involves giving up some part of your nations sovereignty. NATO in reality acts as an extended arm of the US military and it’s industrial complex, and in joining, countries are subjected to this reality of Atlanticism.
Simply not true. Being part of NATO is not an aggressive pact. It is only enacted if another member is attacked. One or more members being aggressive does not mean the rest have to follow. The US and the UK attacked Iran as individual nations. The US has the biggest say in NATO because they spend more than anyone else by quite some distance. Something that is changing because of the Russian attempts to annex Ukraine into its own borders.