Ken,
I fully agree with you. When war becomes affordable, there is a danger.

AusPTE,

Well, the concept of climat refugee over Darfur is a simplistic interpretation of a really complexe political struggle between several ethnic groups over political representation, access to development benefits and military support from SPLA to various armed groups to destabilise SAF and extend the front line...
I really do not like the climat refugee term as it is one more time a pity tool used to disqualify the political dimension of a war in Africa.

Saying so, yes ecological problematics are rising into the diplomatic relations between States. But, if the Starwar project did bring USSR to its knees, its the USSR dependancy on US animal food import that really broke it.
War over food is a story which is older than mankind.

And to the Madmax referal, please rewatch the 1st one. You will see that max is a state servant.