< i>I don't share your optimistic view of the future (surprise surprise).
I visualise a new axis of evil composed of the most powerful nations...China, America, Russia , Germany,UK.ect who will simply invade oil producing countries and take what they need to keep the machine running.

Ake, All of those countries have Coal. Lots of it. You can convert goal into Oil, or Gas. It's not clean, it's not energy efficient, and it's not that cheap,   but it it would be seen as easier and safer than a war over Oil.

You don't need to worry about the end of the World in a War to end all wars over Oil. The flooding caused by CO2 will cause one sooner.