There is nothing unclear about this assassination which is only one of the many murders of supporters of the Iranian opposition that have taken place since the fraudulent election was turned into a coup d'etat by the Revolutionary Guards. The victim signed his own death warrant when he signed a statement of support for Mousavi's campaign in the presidential election. Since the election fraud the Dictatorship has slaughtered many supporters of the opposition. The only thing that makes this murder different from all the others is that in this case the Dictatorship has plumbed new depths of depravity by pointing to the blood on its own hands as a pretext to escalate its threats against Irael.
UN: At least 1,332 Iraqis killed by violence in July (AP)
from the article: 'We will avenge Israel over murder of Iran nuclear scientist'