Let's hope they keep it small and don't try to covertly start a big fire that will drive oil prices back up. It's scary to see a world economic situation where starting/fueling wars starts to make more and more economic sense... I can almost imagine a future "WarEnron" selling the future profits indirectly caused by future wars :)
We should find a way to make sure we have profits aligned with peace and abolish the concept of "wars that make economic sense"! The US and EU at least do this (more or less unintentionally) by keeping weapons and military operations very expensive. Russia probably has more practical means for "cheap destruction" and this is dangerous because at some point some will start placing bets on this and then try nudging world events in the direction of their "win".