I read somewhere yesterday that someone in an important position in Israel (I can't remember who) said that if rockets start falling on Tel Aviv, that this will cause a "doomsday" reaction from Israel (I'm paraphrasing). If Hizbullah and Hamas doesn't want to find out what a "doomsday" reaction is, I'd strongly suggest that they stop making such insipidly insane comments as the headline to this article or they may find out.
"Doomsday" sounds a lot like the Samson Option. I think what he was getting at, was that if Tel Aviv is attacked, matters will escalate beyond control, at which point, Israel may have to invoke the Samson Option.