As the EU states had already agreed to stop importing Iranian crude, this seems like aimless sabre-rattling. It does cut off the window that some countries had to find alternative oil sources, though. Forgive my armchair analysis, but might this help Britain's economy, as the Mediterranean countries which relied on Iranian oil might now be interested in North Sea oil?
The UK is a net oil importer now, so I don't think so.
Oh, thanks. Are there any net oil exporters left among the Western European countries? I was under the impression that the most productive oil fields in Western Europe were in UK waters.
I'm not an expert in North Sea Oil, but I expect Norway is still an net oil exporter. (I don't know whether they count as West European according to your definition.)