He is required, by his home country, to answer questions relating to the crimes alleged against him, as would anybody accused of such crimes.
This does not sound unreasonable??
Beyond that, there is also the potential that no charges will be brought against him, as I understand it he is merely required to answer questions.
If what I read above is correct, regardless of the outcome of these allegations Sweden will not extradite him either due to the potential death penalty.
So why are Ecuador offering him asylum?
What does it have to do with them??
Why shouldn't this man answer to the allegations made against him same as everyone else accused of crimes?
It's not like he's already been tried and convicted unfairly and is to be punished beyond the bounds of his human rights, he's simply being asked to account for himself.
At worst, he faces trial. If he didn't do anything, then what's he worried about??