If only they could make a deal with Canada to swap these oil fields for leaving tar sands in the ground, that would be even better.
Lots of countries are going to have to make this selfless decision if we're going to get a handle on climate change. I don't want to guess what the odds of that are.
Technology is probably still our best hope.
Also: less oil -> higher price -> less burning
I don't think there's going to be transport ships docked for lack of fuel just because Norway doesn't develop some oil fields. And I think once supply some day gets to a point where oil price skyrockets, we'll probably end up developing them then - they'll revisit the case and circumstances changed (or maybe just politicians changed) and they'll suck it up anyway.
Or maybe US/Russia/whoever will come liberate it. I mean I doubt that's happening any time soon but it's definitely a real possibility in a future scenario where resources are dwindling.
Well just give up now then.
Let's assume we can have enough sense to decide not to pump it and leave it that way. Then it's a win.