Jesus, feel free to agree or disagree. Krugman is one of the few establishment economists that talks in favour of the measures adopted in Argentina in the early 00's and the country actually recovered, despite the recriminations of IMF and other institutions. If you want my opinion, Lula is above Kirchner in my list of preferences, at least at a personal level.
It's not as if the beleaguered first term of Thatcher's didn't benefit enormously (and was pretty much saved) by the Falklands (see here, for instance), so as you rightly say - jingoism and electoral self-interest swing both ways.
Fortunately the Thatcher days will never come back. Cristina Feranández must be a jingoistic and a demagogue, but she's not an idiot like Videla. I suppose that Cameron isn't foolish enough to expect such idiotic moves.
I'm not disagreeing with Krugman, I'm talking about the comments that are disagreeing with Krugman in there.