Gal Luft floats some signs to look for when reading the tea leaves on an Iran strike:
Getting an Israeli commitment to hold its planes on the ground until after the November elections means Israel would have to postpone the attack by at least a year, as a winter strike is more difficult to execute. This is a non-trivial request that — if even considered — would come at a hefty price. While such a quiet agreement would never be publicly acknowledged, there would be telltale signs galore. The release of imprisoned spy Jonathan Pollard, a job-creating U.S. weapons deal, or an overturning of the decision to cut missile-defense spending for Israel in the administration's fiscal 2013 budget proposal would indicate to the outside observer that the president may have bought himself more time.
The Dish 