WASHINGTON, Nov. 20, NY Times - On Nov. 8, Italian public television showed a documentary renewing persistent charges that the United States had used white phosphorus rounds, incendiary munitions that the film incorrectly called chemical weapons, against Iraqis in Falluja last year. Many civilians died of burns, the report said.
The half-hour film was riddled with errors and exaggerations, according to United States officials and independent military experts. But the State Department and Pentagon have so bungled their response - making and then withdrawing incorrect statements about what American troops really did when they fought a pitched battle against insurgents in the rebellious city - that the charges have produced dozens of stories in the foreign news media and on Web sites suggesting that the Americans used banned weapons and tried to cover it up.
The Iraqi government has announced an investigation, and a United Nations spokeswoman has expressed concern.
"It's discredited the American military without any basis in fact," said John E. Pike, an expert on weapons who runs GlobalSecurity.org, an independent clearinghouse for military information. He said the "stupidity and incompetence" of official comments had fueled suspicions of a cover-up.
"The story most people around the world have is that the Americans are up to their old tricks - committing atrocities and lying about it," Mr. Pike said. "And that's completely incorrect."
Daryl G. Kimball, director of the Arms Control Association, a nonprofit organization that researches nuclear issues, was more cautious. In light of the issues raised since the film was shown, he said, the Defense Department, and perhaps an independent body, should review whether American use of white phosphorus had been consistent with international weapons conventions.
"There are legitimate questions that need to be asked," Mr. Kimball said. Given the history of Saddam Hussein's use of chemical weapons in Iraq, he said, "we have to be extremely careful" to comply with treaties and the rules of war.
At a time when opposition to the war is growing, the white phosphorus issue has reinforced the worst suspicions about American actions.
The documentary was quickly posted as a video file on Web sites worldwide. Bloggers trumpeted its allegations. Foreign newspapers and television reported the charges and rebuttals, with headlines like "The Big White Lie" in The Independent of London.
Officials now acknowledge that the government's initial response was sluggish and misinformed.
"There's so much inaccurate information out there now that I'm not sure we can unscrew it," Lt. Col. Barry Venable, a Defense Department spokesman who has handled many inquiries about white phosphorus, said Friday.