Ahem...

Europe.

A number of nation states, including a number of Scandinavian nations as well as the Maltese Islands have enjoyed a few perks of Socialism.

True, they may not be 'pure' Socialist nations but my point is that it is not a fair representation of Socialism to exclusively associate such with failed nation states. There is another side to the coin - and I'd even go as far as to suggest that Socialism itself is not at the root of the reason those nations fall in the first place (and here I shall stay my hand from from taking a more direct dig at external forces).