Bush preparing his next war?

From CNN.com:

quote
The U.S. military Sunday presented evidence it says shows an elite Iranian force under the command of Iran's supreme leader is behind bombings that have killed at least 170 U.S. troops in Iraq.

U.S. officials have made general statements in the past year about Iranian involvement in Iraq, but haven't provided many details. The charges came at a Baghdad briefing by a senior defense official, a senior defense analyst and an explosives expert, all of whom asked to remain unnamed.

The officials focused on EFPs, or explosively formed penetrators, as evidence that Iran is involved in arming Iraqi insurgents. EFPs can punch through heavily armored vehicles.

The U.S. military officials said EFPs are manufactured in such a specific way that they can be traced to Iran. Also, the U.S. military says 81 mm mortar shells used in deadly attacks in Iraq can also be directly traced to Iran.
Unquote

Does anyone still believe the Americans when they come up with "evidence" like this? It looks like Bush is willing to sacrifice many more lifes to save his political future.