Strictly speaking, I think you've got it a bit arse about face. Icelandic banks made British funds disappear because of dodgy investments, which made Iceland fatally attractive to investors. When the wheel came off, all the UK did was invoke (albeit the wrong) legislation to get ahead of the queue of debtors - chasing our own cash is hardly plundering!
I would also suggest that the location for the coming NATO exercises might be a fairly recent choice, in view of Russia's offer to bail Iceland out financially. Ivan is not just doing this because they're nice. Overtly, it does look odd, but your take on the UK plundering Iceland is somewhat polarised the wrong way round.