Now, let's say the Israelis wanted to buy Rafales. Should France deny it? Nope. If they don't the Israelis will buy American instead (which they do anyway, but still).
Results are the only thing that matter. Of course, France could turn not selling Rafales to Israel into a big political issue, shaming Israel. Then it would be a relevant thing to do. Peak oil is not an energy crisis. It is a liquid fuel crisis.
If you want opression, sticks and guns are far more efficient. Peak oil is not an energy crisis. It is a liquid fuel crisis.
