Reality of Attack on Iran Sinking in for Bush?

This analysis of thinking inside the White House about war with Iran says that Bush seems to be getting the notion that war over Iran's nuclear aspirations is unrealistic.

According to Richard Sele (posted at Sic Semper Tyrannis):

But they did say that Bush is also becoming "increasingly pessimistic" about any military action against Iran. According to one, "Bush really wanted to mount an attack on Iran earlier this year -- he was really hot to trot," but military briefings brought home to him that attacking Iran did not mean eliminating its suspected nuclear sites but also having to destroy "Iran's entire retaliatory capability," in the words of one. This capability is formidable; U.S. intelligence sources say Iran has underground missile batteries southwest of Abu Musa with the HY-2 advanced version of the Silkworm anti-ship missile. There are also Scud-Cs which could hit any UAE ports, including those to the south and west of Abu Dhabi and they could also strike Dubai where U.S. naval sources currently dock at the port of Jebel Ali. [my emphasis]