"... both hard-liners". If you think there is no difference between Mr. A and Mousavi, you need to read a bit more.

Among other things, as I've already noted more than once, it is a question of expectations---and specifically what Israel expects from each--since an attack by Israel in order to deal with a perceived nuclear threat is probably the most likely event to start a conflagration in that part of the world.    Mr. A has made it clear what his intentions are. Mousavi has talked of negotiation on the crucial point. And since Israel is a rational actor, as long as there is a good chance to avoid the necessity of attacking Iran, it will act accordingly.