E.g. some years back, Swedish police black bagged two political asylum seekers from Egypt and illegally handed them over to the CIA, knowing the CIA would fly them to Egypt and hand them over to Mubarak. Sweden asked for a "promise" they'd not be tortured, which they promptly were of course. The entire operation violated by Swedish law and international law, was condemned by the UN and Sweden has been ordered to pay restitution over it.
Yet a few years later, Swedish military police uncovered that the CIA were still conducting illegal rendition flights via Sweden, with the cooperation of Swedish ground staff. We know about the latter only because Wikileaks years later reported on how the US ambassador to Sweden was called in to the Swedish foreign ministry over the matter. We don't know whether there have been further "issues" because it has never been investigated thoroughly by anyone that we know of, and certainly not publicly.
Clearly some Swedes - including police officers - were ok with blatantly ignoring Swedish law in the first matter, and some were willing to continue cooperating with the CIA illegally even after the massive uproar of the first revelations, and after it was clear political authorities at least in public opposed it, and at the same time as other parts of the Swedish government were prepared to take action against it.
Remember that there was little/no international support for the US starting wars in Afghanistan and Iraq, but the US did so anyhow and since nobody has invaded the US for doing so, it seems that the US has "gotten away with it" at least so far as international law is concerned.
Finally it doesn't have to be that the Swedes desperately want Assange to be extradited, but merely that someone from the US is pressuring them to keep reminding the world that "Assange isn't a good guy" from time to time.
I'm not saying Assange is innocent, either. I honestly don't know. But to think that the US has an interest in hindering him, well, that's not unreasonable at all.
Would Ecuador go to war over such an act ? No way.
http://en.wikipedia.org/wiki/Repatriation_of_Ahmed_Agiza_and...