My two cents in reply is this: Yes, sanctions and threats do not work where these actions are merely seen as weakness. In a regime where one man gets his way however he wishes, the corruption is absolute. The consideration of others is not taken into account - why need it be? I believe a big "elephant in the room" that is not often discussed is our preoccupation with Political Correctness. Granted diplomacy has it's place, but when a person, group, country, etc. can no longer state the truth "because it may offend", and thus has to resort to sweet-sounding lies and intricate dances around the truth, it HAS put itself into a position of weakness. And add in the fact that the adversary is a man (Ahmadinejad), who never has to concern himself with explaining himself to others or caring who he hurts - who is really the weak one? Until we get some leaders (on many sides) who actually have the resolve to call wrong, wrong instead of calling wrong, "right for him", the ones with the power to kill and destroy will stay on top as sorry as it is.
Australian police arrest 5 over shooting 'linked to terrorism' (Reuters)
from the article: Brazil: Iran is willing to talk, others must do the same