Here is leading human rights lawyer Geoffrey Robertson QC talking about the Mladic arrest, in standard terms.
Apart from this:
He could – and should – have been taken into custody between 1996 and his disappearance in 2002, but diplomats then did not trust international justice: "The capture of Karadzic and Mladic," said a Nato spokesman, "is not worth the blood of one Nato soldier".
What?
This is wrong and annoying. He doesn’t know what he’s talking about. The problem was not risk-averse diplomats, but risk-averse politicians. Above all, President Clinton’s reluctance to take any military risks.
What actually happened back then is well described on this site, should QCs or other learned commentators wish to read it.