this is the stuff that make wars happen, how long do you think that Europe can go without nat gas?, and how long do you think that Russia can go without selling it to them?,
The one cancels out the other, besides Putin is a smart bully, much smarter than W ever was. This spat will be resolved, because the EU eventually will bail out Ukraine.
On the other hand, the Mako trough project was going ahead regardless of this dispute. They do enjoy the extra spotlight though.