Col. Pat Lang, a former intel officer who blogs at Sic Semper Tyrannis, has a guest post by someone named simply “Harper.” This Harper was recently in touch with an American source who visited Israel and met with senior officials there, including Israeli Prime Minister Benjamin Netanyahu.

There’s a lot of information packed into the post: French President Nicolas Sarkozy’s support for Netanyahu’s determination to attack Iran; the politics of the February 2011 change of Israel’s army Chief of Staff; Secretary of Defense Robert Gates’s plan to depart the U.S. administration before an attack; and Israel’s calculus of blowback from airstrikes and what to do about them — i.e. attack Southern Lebanon and Gaza just as planes take off for Iran.

But, after all that, the post ends with bang —  a discussion of the determination of Israel to attack Iran and the possible timeframe of such an assault.

Here’s Harper, on Lang’s blog:

When might such an operation be launched? My source believes that, if it does not happen before December 10, it will next be on the table for March or April 2011.

Netanyahu is considering, but has not finalized in his mind, to order strikes in late November 2010. All IDF vacations have been suspended as of this week; and IDF officers studying abroad have been summoned home temporarily. The line circulating around is: “No repeat of the Yom Kippur War when Israel was caught by surprise.” END”  Harper

Will we have an Israeli strike — without a U.S. greenlight — by this upcoming spring? Doubtful.

An Israeli friend informs me that his military-connected sources have heard nothing about an imminent strike and that a massive cancellation of leave never materialized. However, it does appears that some weekend leave was cancelled on the weekend when Iran did it’s own massive military exercises aimed at preparing for such an aerial attack.