Defense Minister Shaul Mofaz set a new national record for cynical opportunism today – and that is no small feat.

After days of reaffirming, declaring, insisting and announcing that he was staying in the Likud, Mofaz has now flip-flopped and said that he is bolting the party to join Prime Minister Ariel Sharon’s Kadima.

And what exactly was it that prompted this dramatic change? According to various media reports, Sharon has promised Mofaz that he can remain Defense Minister.

Of course, it was just the other day that Mofaz was telling people: “You don’t leave your home,” when asked if he was planning to leave the Likud.

But then poll results were published in Friday’s newspapers indicating that he had little chance of winning the Likud leadership in the party’s upcoming primary – hence, his decision to jump ship.

So much for the man’s credibility.

This is a sorry day for Israeli politics – not so much because of Mofaz’ decision to switch parties, but more because of what it represents – a complete abandonment of any pretense of ideology, and a total embrace of crass political opportunism.

The Jewish people deserve better, far better, than this.