He presided over the massacres at Srebrenica in 1995:
http://www.bbc.co.uk/news/world-europe-13561407
http://www.bbc.co.uk/news/world-europe-13561407
Considering how long it took the government to actually detain him and the slow response to other such ethnic cleansing trades in Africa, I worry that race targeting in war is a crime whose victims can't count on timely justice.
I've never even heard of this guy. Good riddance.