The United States Tuesday pledged to release its intelligence findings into the Syria chemical attack this week, but said it was "preposterous" that anybody would blame anyone other than the Syrian government.

The United States Tuesday pledged to release its intelligence findings into the Syria chemical attack this week, but said it was "preposterous" that anybody would blame anyone other than the Syrian government.

Underlining signals that an expected US military action would be of limited scope, the White House said it was not seeking to bring about "regime change" in Syria and refused to say whether it would seek a UN mandate to strike.

White House spokesman Jay Carney said there "should be no doubt, for anyone who approaches this logically, that the Syrian government is responsible for the use of chemical weapons on August 21 outside Damascus."

"Suggestions that there is any doubt about who is responsible for this are as preposterous" as arguments that the attack did not take place, he added.