Former Vice President Dick Cheney's new memoir is reviving fierce battles among Bush administration officials over U.S. national security policies after Sept. 11, 2001.

Cheney describes his upbringing on the Wyoming prairie, where he hunted jackrabbits and learned to fish before turning his attention to his eight years in the Bush White House, where he pushed a go-it-alone world view that enraged his critics.

The book, In My Time, has grabbed headlines for Cheney's attempts to settle scores with foes such as former secretaries of state Colin Powell and Condoleezza Rice.

Powell accused Cheney of taking cheap shots at his former colleagues.

Rice, in an interview with Reuters Wednesday, said she did not appreciate Cheney's attacks on my integrity.

Beyond such skirmishes, the book also highlights how far the national security debate has shifted as the United States prepares to mark the 10-year anniversary of the attacks on the Pentagon and the World Trade Center in New York.

Cheney's unapologetic defense of policies he advocated, such as harsh interrogations of terrorism suspects -- included practices generally considered torture -- and interventionist foreign policy, surprised few in Washington.

Perhaps more surprising was the marked shift away from the vision championed by Cheney, who won many of the policy arguments in the early George W. Bush years only to see his influence wane in the president's second term.

The majority of what is associated with Cheney and what Cheney embraces in the book -- a unilateralist, American exceptionalist, 'our way or the highway' approach to the world -- has been completely abandoned, said David Rothkopf, a former Clinton administration official and author of a book about the White House National Security Council.

GO-IT-ALONE VS. MULTILATERALISM

U.S. war-weariness after Iraq and Afghanistan has become so pronounced that advocacy of a muscular U.S. foreign policy pushed by Sen. John McCain, R-Ariz., in 2008 has gotten little emphasis among Republicans vying to challenge President Barack Obama in 2012.

And Republican lawmakers were among the most vocal in questioning Obama's decision to intervene in Libya in March.

Rothkopf noted that the manner of intervention, in which the Obama administration insisted on multilateralism and wanted other countries to take the lead, is the reverse of the approach favored by Cheney.

While Cheney pushed a hawkish approach toward Iran and Syria and even suggested bombing a Syrian nuclear reactor in 2007, the idea of U.S. military intervention in either of those two countries is not currently part of the national dialogue.

On counterterrorism policies, one of Obama's first acts when he took office in 2009 was to disavow torture and promise to close the U.S. military prison at Guantanamo Bay, Cuba -- though the detention center remains open to this day because the administration has struggled with a lack of feasible alternatives.

In his book, Cheney puzzled over Obama's view that the prison harms America's image in the world even though Bush himself expressed sympathy for that perspective in a 2006 news conference in which he said he'd prefer to close Guantanamo if an alternative could be found.

It's not Guantanamo that does the harm, it is the critics of the facility who peddle falsehoods about it, Cheney writes.

SOME CONTINUITY

Still, Peter Feaver, a former Bush adviser, said there is more continuity in the national security policies than Obama and his aides acknowledge.

Feaver cited as examples the indefinite detentions of some terrorism suspects, the reversal of the promise to close Guantanamo and the expansion of drone attacks to go after militants in Pakistan.

When it comes to the legal edifice of the war on terror and the tools that are used, the Obama administration is a lot closer to the Bush administration than the Obama campaign was.

Part of that is because the Bush administration moved somewhat from where it was in 2002 to where it was, say in 2006, Feaver said, noting that even harsh interrogations were scaled back under Bush before being rejected by Obama.

Cheney's chief adversaries during Bush's first term were Powell and his deputy, Richard Armitage.

Cheney portrays Rice as naive and in one passage says she tearfully came to his office to discuss her regrets about a policy argument. Rice challenged the notion that she ever came to Cheney's office tearfully about anything.

Speaking in an interview with Reuters, Rice also rejected Cheney's contention that she misled Bush about nuclear diplomacy with North Korea.

I kept the president fully and completely informed about every in and out of the negotiations with the North Koreans, Rice said in her first public comments on the matter. You can talk about policy differences without suggesting that your colleague somehow misled the president. You know, I don't appreciate the attack on my integrity that that implies.

Rice, in a telephone interview, also disputed a passage in Cheney's memoir, In My Time, in which he says the secretary of state tearfully admitted that the Bush administration should not have apologized for a claim in Bush's 2003 State of the Union address on Iraq's supposed search for uranium for nuclear arms.

Cheney, who opposed a public apology for the unfounded claim, wrote that Rice came into my office, sat down in the chair next to my desk, and tearfully admitted I had been right.

It certainly doesn't sound like me, now, does it? Rice said in the interview. I would never -- I don't remember coming to the vice president tearfully about anything in the entire eight years that I knew him.

I did say to him that he had been right about the press reaction to the administration's acknowledgment that the remarks about Iraq seeking uranium in Africa should not have been in Bush's speech, Rice said.

And so I did say to the vice president, 'you know, you were right about the press reaction.' But I am quite certain that I didn't do it tearfully, she said.

Powell has described Bush's national security team during the first term as so dysfunctional, there were not only differences of opinion but views that could not be reconciled.

The back-and-forth over the book seems to support that characterization.

Cheney, who wielded unprecedented power as vice president, began to see his clout decline after Rice, a longtime friend and close aide of Bush, moved from her role as national security adviser to secretary of state in early 2005.

His influence decreased further when his ally and former mentor Donald Rumsfeld was replaced as defense secretary by the more moderate Robert Gates, who went on to serve in the Obama administration.

(Writing by Caren Bohan; Editing by Xavier Briand)