Rationing and Rationalizing

First, I thought we were fighting for God. Then, I realized we were fighting for wealth and land. I was ashamed.
--Tiberias (Kingdom of Heaven)

Germany has begun rationing energy-related resources to compensate for their self-imposed sanctions with Russia. Am sure German citizens are being told to suck it up. 

Unfortunately we know that if goods do not cross borders, armies will.

How long will it be before people of G-7 countries, absent power and heat, look longingly at Russian resources and rationalize war to seize oil and gas for the 'greater good?'