Thirty Senators, led by Jim Webb, have just released a letter they sent to the President. The message: Stop trash-talking about Iran. Key quote:

We are writing to express serious concerns with the provocative statements and actions stemming from your administration with respect to possible U.S. military action in Iran. These comments are counterproductive and undermine efforts to resolve tensions with Iran through diplomacy.

We wish to emphasize that no congressional authority exists for unilateral military action against Iran.

Intrestingly, as The Huffington Post reported today, one Senator who didn't sign the letter is Barack Obama, apparently because he disagrees with the letter's assertion that Kyl-Lieberman "should in no way" be seen as a predicate for war with Iran.

"It will take more than a letter to prevent this administration from using the language contained within the Kyl-Lieberman resolution to justify military action in Iran," Obama spokesman Bill Burton told us. "This requires a legislative answer and Senator Obama intends to propose one."

The full letter, and a full list of signers, after the jump.

The letter:

We are writing to express serious concerns with the provocative statements and actions stemming from your administration with respect to possible U.S. military action in Iran. These comments are counterproductive and undermine efforts to resolve tensions with Iran through diplomacy.

This includes the Senate vote on September 26, 2007 on an amendment to the FY 2008 National Defense Authorization Act. This amendment, expressing the sense of the Senate on Iran, and the recent designation of the Quds Force of the Iranian Revolutionary Guard as a Specially Designated Global Terrorist, should in no way be interpreted as a predicate for the use of military force in Iran.

We stand ready to work with your administration to address the challenges presented by Iran in a manner that safeguards our security interests and promotes a regional diplomatic solution, but we wish to emphasize that offensive military action should not be taken against Iran without the express consent of Congress.

Signers:

1. Webb

2. Akaka

3. Baucus

4. Boxer

5. Brown

6. Byrd

7. Cantwell

8. Carper

9. Casey

10. Clinton

11. Dodd

12. Dorgan

13. Durbin

14. Feinstein

15. Harkin

16. Johnson

17. Kerry

18. Klobuchar

19. Kohl

20. Leahy

21. McCaskill

22. Mikulski

23. Murray

24. Reed

25. Rockefeller

26. Sanders

27. Stabenow

28. Tester

29. Whitehouse

30. Wyden