Has Israel Already Tried To Hit Iran With Nukes?

According to William Thomas, Israeli warplanes were prevented from dropping nuclear bombs in Iran a little over a week ago.

"A recent strike by nuclear-armed Israeli Air Force fighter-bombers bound for targets in Iran was turned back after being intercepted by U.S. fighters over Iraq, this reporter has learned.
Two sources have independently confirmed the encounter, which took place on January 7, 2007. Though the first informant offered few details beyond an initial tip, a second source long-known by this reporter to have well-placed U.S. and “non-U.S.” military and government contacts provided specific information regarding the raid, which was aimed at the radical religious ayatollahs holding ultimate power in Iran."

I hadn't heard anything about this. In the high stakes cat and mouse games being played in these volatile times the intercept, if it happened, may have only been a feint sending a message. In fact later in his piece Thomas alludes to that possibility:

"According to my informant, the three “warning” nuclear strikes launched against Iran and aborted by Israel came in response to threatening military moves that accompanied belligerent public statements by Iranian president Mahmoud Ahmadinejad."

William Thomas does have a lot of credibility with me. He's been a outspoken critic of the hidden-in-plane-sight chemtrail spraying program for years when not only would people refuse to believe what was going on over their heads but would ridicule those who'd raise the alarm.
However an attempted nuclear attack is serious beyond any measure and I'd sure like confirmation about it. If it's true the government of Israel should immediately be taken into custody before they're capable of doing harm.