> Iran has petrol

More than taking control of Iranian petrol, this is probably more an attempt at cutting off China access to it (and also generally eliminating one of their allies), same as for the Venezuelan invasion.

You've completely misunderstood the poster's point. Nations are being taught that without nuclear weapons you could be attacked in this new world.

I used to believe that, I think there are also some very ambitious people nearby who want to use US armed forces for their benefit - as any rational player who has influence over such power would attempt.