Excellent recent column from Krugman; a sample:

Now there are rumors of plans to attack Iran. Most strategic analysts think that a bombing campaign would be a disastrous mistake. But that doesn't mean it won't happen: Mr. Bush ignored similar warnings, including those of his own father, about the risks involved in invading Iraq.

As Joseph Cirincione of the Carnegie Endowment for International Peace recently pointed out, the administration seems to be following exactly the same script on Iran that it used on Iraq: "The vice president of the United States gives a major speech focused on the threat from an oil-rich nation in the Middle East. The U.S. secretary of state tells Congress that the same nation is our most serious global challenge. The secretary of defense calls that nation the leading supporter of global terrorism. The president blames it for attacks on U.S. troops."

Why might Mr. Bush want another war? For one thing, Mr. Bush, whose presidency is increasingly defined by the quagmire in Iraq, may believe that he can redeem himself with a new Mission Accomplished moment.

And it's not just Mr. Bush's legacy that's at risk. Current polls suggest that the Democrats could take one or both houses of Congress this November, acquiring the ability to launch investigations backed by subpoena power. This could blow the lid off multiple Bush administration scandals. Political analysts openly suggest that an attack on Iran offers Mr. Bush a way to head off this danger, that an appropriately timed military strike could change the domestic political dynamics. [wag the dog]

Does this sound far-fetched? It shouldn't. Given the combination of recklessness and dishonesty Mr. Bush displayed in launching the Iraq war, why should we assume that he wouldn't do it again?

The last preemptive attack was against a non-WMD country, and this administration knew it (read the many DSMs and Waas articles). Now they're looking to pick a fight with a country that by all accounts is much farther along with real WMD (nuclear), as per good intel.

Do you trust these clowns to execute a successful Iran offensive given their track record? Be very afraid.