Hello?
North Korea are a minor blip on the threat board.
It's population are starving, the Armed Forces are in a state of extreme disarray and what the country wants is the US (or UN if you like)to lift sanctions so they can actually get on with their lives.
Susan Sarandon ..... you are joking!
An fine actor (nearly called her 'actress' oops!) but an authority on anything??
Serbia, is this 1914 or 1990 you refer to?
The origins of the Great War are far more complex than a crazed Nationalist shooting a member of a decaying Royal Family.
The recent Balkan conflict was a result of long standing 'tribal' faction fighting centuries old, allied to the loss of one Josef Broz aka 'Tito' several years previous who 'united' the factions ..... albeit unwillingly.
You misunderstand the concept of 'removing' the problem, one removes the source, without resorting to open warfare or impotant diplomacy ..... QED.