I only want to make an observation. In the Cuban missile crisis, Kennedy did not ACT until launch pads were built and missiles were on the way to Cuba. That would be when the ball is on the goal line, but not across it. As all to many American football teams know the hardest ground to gain is in the RED ZONE. Most attempts at touchdowns fail. I do agree that EXTREME diligence is called for while in the RED ZONE. By giving RED LINES you actually enhance Iran's ability to reach their goal. The more an adversary knows about your plans the better prepared they can become. If they know where your looking the sleight of hand becomes easier. Even football teams know this.
U.S. confirms ISIS computer expert killed in air strike (Reuters)