What I want to know is this:  What on earth are the Norwegians thinking??!  Don't they know that this move will infuriate the US?  They are already an extremely wealthy country due to their own oil native oil endowment, for crying out loud!  Is it just me, or don't the Norwegians stand to lose a lot more (perhaps not in immediately tangible ways) than they stand to gain by this little stunt?

Any opinions out there as to whether the Norwegians are motivated by greed?  Or perhaps they WANT to provoke the US?  Or perhaps they are just clueless?

The Norwegian oil fields like the North Sea is is rapid decline.  They may not have more than a trickle of oil in a decade.
Is there any reason to suppose this is more than the entrepreneurial actions of a single company?  Why suppose any official Norwegian involvement?
According to this page the Norwegian state doesn't own any shares in this company. We are no talking about Statoil or hydro here, where the state owns 70%(link) (select share, then shareholders(top 20)) and 43%(link).
The company in question, DNO (Det Norske Oljeselskap) has no Norwegian state ownership, this is purely the entrepreneurial actions of a single company.