What concerns me that he then might be subsequently be extradited to the US for more dubious charges. Apparently one of the conditions Sweeden itself places on extraditing one of their citizens is that the country seeking extradition agrees not to then extradite them to another third country. I don't see why it is so difficult for Sweeden to give such a assurance. Assurances are routinely placed on extradition (e.g. around the death penalty etc.). The fact that such assurances can't or won't be given just seems a bit off to me.