It's not detention though is it? And again, he availed himself of all the legal tools available in the UK to bring up exactly those issues, and every single layer of the UK courts agreed that he could be extradited. There was nothing barring the US requesting an extradition from the UK (As they are doing now) and no particular benefit in doing so from Sweden.

And again, he wasn't detained, he fled after breaching his bail because he felt there was a risk. That was his decision...