IT is true, petro-dollar was the reference and US was the master that used to rule the world.

It isn't anymore, now every country will have to adapt it.

It is not completely true to say it is the reasons of war.

War came with nationalism and extremism.

And it is what happen, both of them.

If we all want peace we have to force our leader to make alliance and "union", the complete opposite of nationalism which make us blink and focus on our country.

We are more powerful together, not alone.

It will be the lesson we will have to get soon.