Dear Diary: Bibi is sabre-rattling about Iran again, saying: "If not now, when?" The answer to that, Bozo, is: After I'm re-elected. I have made it clear to him that I will not be available to meet him when he visits the UN later this month. Meetings are a waste of time when I already know everything there is to know about everything. That's why I skip most of my presidential 'intelligence' briefings. I already have more intelligence than ordinary mortals can cope with. Meantime, as that pesky Rush Limbaugh has predicted, Rahm and the teachers of Chicago are positioning themselves skillfully for me to swoop down and save the day when things turn ugly. Never let a useful mayor go to waste, I say.