WASHINGTON, April 26 — George J. Tenet, the former director of central intelligence, has lashed out against Vice President Dick Cheney and other Bush administration officials in a new book, saying they pushed the country to war in Iraq without ever conducting a “serious debate” about whether Saddam Hussein posed an imminent threat to the United States.

The 549-page book, “At the Center of the Storm,” is to be published by HarperCollins on Monday. By turns accusatory, defensive, and modestly self-critical, it is the first detailed account by a member of the president’s inner circle of the Sept. 11, 2001, terrorist attacks, the decision to invade Iraq and the failure to find the unconventional weapons that were a major justification for the war.

“There was never a serious debate that I know of within the administration about the imminence of the Iraqi threat,” Mr. Tenet writes in a devastating judgment that is likely to be debated for many years. Nor, he adds, “was there ever a significant discussion” about the possibility of containing Iraq without an invasion.

Mr. Tenet admits that he made his famous “slam dunk” remark about the evidence that Iraq had weapons of mass destruction. But he argues that the quote was taken out of context and that it had little impact on President Bush’s decision to go to war. He also makes clear his bitter view that the administration made him a scapegoat for the Iraq war.