On Wednesday, the New York Times published a provocative story bylined by David E. Sanger and Ashley Parker, leading with the news that Mitt Romney had personally approved the blistering Tuesday night statement on the attacks in Libya and Egypt that landed his campaign in trouble.

But hours later, the newspaper wiped the story out and replaced it with a significantly rewritten piece bylined by Peter Baker and Ashley Parker. [See updates]

The later version, which appeared on the front page of Thursday's paper, fleshed out the controversy with more details, but no longer included a couple of key anonymous quotes from people close to the candidate, one who offered the rationale behind Romney's decision -- to call out the Obama administration for supposedly "sympathiz[ing] with those who waged the attacks" -- and another who criticized it.

Originally, the Times reported that a Romney "senior adviser" explained how the candidate and his team "saw what they believed was an opportunity to underscore a theme Mr. Romney had sounded often about his Democratic rival."

“We’ve had this consistent critique and narrative on Obama’s foreign policy, and we felt this was a situation that met our critique, that Obama really has been pretty weak in a number of ways on foreign policy, especially if you look at his dealings with the Arab Spring and its aftermath,” one of Mr. Romney’s senior advisers said on Wednesday. “I think the reality is that while there may be a difference of opinion regarding issues of timing, I think everyone stands behind the critique of the administration, which we believe has conducted its foreign policy in a feckless manner.”

The later version only included the second sentence, attributing it not to a "senior adviser" but "one senior strategist, who asked not to be named."

The Times also originally quoted "an adviser to the campaign who worked in the George W. Bush administration" who said that Romney “had forgotten the first rule in a crisis: don’t start talking before you understand what’s happening.” That anonymous Romney adviser, offering criticism of the candidate, is missing from the later version.

The later version -- almost completely rewritten, as a side-by-side analysis by NewsDiffs makes clear -- no longer includes those quotes.

While it's not uncommon for breaking news stories to go through a series of changes throughout the day, this piece appears to be atypical. Talking Points Memo editor Josh Marshall, who flagged the changes in a post Wednesday night, suggested the changes to this piece "would seem to require some explanation."

In an email to The Huffington Post, Baker explained why one source in the first version isn't in the second one.

"As we reported more through the day, we found Republicans criticizing Gov Romney on the record, so why use an anonymous one?" Baker said. "There are too many blind quotes in the media and we try not to use them when it's not necessary."

The link to the original story now takes readers to the rewritten version, which includes a list of Times journalists contributing: "Peter Baker reported from Washington, and Ashley Parker from Jacksonville, Fla. David E. Sanger, Jonathan Weisman and John H. Cushman Jr. contributed reporting from Washington, and Michael Barbaro and David W. Chen from New York."

UPDATE: A Times spokeswoman responds: "As reporting went on during the day yesterday, we were able to flesh out the story, add more context and get more sources on the record, which is obviously what we prefer. Having said that, we stand by the reporting in all versions of the story.

UPDATE 2: The Huffington Post followed up with a question about the Times policy for replacing one story with a significantly different version. Times standards editor Phil Corbett responds:

Our usual practice is to update a developing story on the same Web address, or URL, throughout the news cycle. The main reason for this, as I understand it, is to ensure that any reader looking for that story will land on the best, fullest, most up-to-date version we can offer at that time. We don't want a reader to click on a link -- say, from search, a blog or social media -- and end up reading an old story, when we've published a newer or better version.

There are also internal workflow issues in handling multiple versions of a story -- it's generally most efficient for us to maintain a constant URL.

That said, there are times when a new version is so different from a previous one that we do treat it as a completely different story, with a new URL. One could discuss whether we could have done that here, though in fact the two versions do go over much of the same ground and include a lot of the same reporting.

Obviously, when a story is revised or updated, some stuff is likely to be taken out as new stuff is added. (And if we can replace anonymous quotes with on-the-record quotes, that's often a desirable thing.) It should go without saying that the intent is not to hide anything, but simply to try to give readers the best version we can at any given time.

This post was updated to reflect that part of one quote from a "senior adviser" (in first version) attributed to "senior strategist" in later version. Baker's comment was also added.

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  • President Barack Obama

    "I strongly condemn the outrageous attack on our diplomatic facility in Benghazi, which took the lives of four Americans, including Ambassador Chris Stevens. Right now, the American people have the families of those we lost in our thoughts and prayers. They exemplified America's commitment to freedom, justice, and partnership with nations and people around the globe, and stand in stark contrast to those who callously took their lives. I have directed my Administration to provide all necessary resources to support the security of our personnel in Libya, and to increase security at our diplomatic posts around the globe. While the United States rejects efforts to denigrate the religious beliefs of others, we must all unequivocally oppose the kind of senseless violence that took the lives of these public servants. On a personal note, Chris was a courageous and exemplary representative of the United States. Throughout the Libyan revolution, he selflessly served our country and the Libyan people at our mission in Benghazi. As Ambassador in Tripoli, he has supported Libya's transition to democracy. His legacy will endure wherever human beings reach for liberty and justice. I am profoundly grateful for his service to my Administration, and deeply saddened by this loss. The brave Americans we lost represent the extraordinary service and sacrifices that our civilians make every day around the globe. As we stand united with their families, let us now redouble our own efforts to carry their work forward."

  • Mitt Romney

    "The Embassy of the United States in Cairo condemns the continuing efforts by misguided individuals to hurt the religious feelings of Muslims -- as we condemn efforts to offend believers of all religions," the statement read. "The embassy in Cairo put out a statement after their grounds had been breached, protesters were inside the grounds," said Romney at his press conference. "They reiterated that statement after the breach. I think it's a -- a terrible course for America to stand in apology for our values. That instead, when our grounds are being attacked, and being breached, that the first response to the United States must be outrage at the breach of the sovereignty of our nation. And apology for America's values is never the right course." The embassy's statement, however, came before the protests -- not after, as Romney claimed. The embassy did subsequently tweet that it stood by its condemnation of the video, but it also condemned the attacks. When reporters pointed out that the White House disavowed the Cairo embassy's statement, Romney said he agreed with that response. He still said, however, that the embassy was part of Obama's administration, and therefore the president was ultimately responsible. "It's their administration," said Romney. "Their administration spoke. The president takes responsibility not just for the words that come his mouth but also from the words of his ambassadors, from his administration, from his embassies, from his State Department. They clearly sent mixed messages to the world, and the statement that came from the administration, and the embassy is the administration."

  • Secretary Of State Hillary Rodham Clinton

    "It is with profound sadness that I share the news of the death of four American personnel in Benghazi, Libya, yesterday. Among them were United States Ambassador to Libya Chris Stevens and Foreign Service Information Management Officer Sean Smith. We are still making next of kin notifications for the other two individuals. Our hearts go out to all their families and colleagues. A 21-year veteran of the Foreign Service, Ambassador Stevens died last night from injuries he sustained in the attack on our office in Benghazi. I had the privilege of swearing in Chris for his post in Libya only a few months ago. He spoke eloquently about his passion for service, for diplomacy and for the Libyan people. This assignment was only the latest in his more than two decades of dedication to advancing closer ties with the people of the Middle East and North Africa, which began as a Peace Corps Volunteer in Morocco. As the conflict in Libya unfolded, Chris was one of the first Americans on the ground in Benghazi. He risked his own life to lend the Libyan people a helping hand to build the foundation for a new, free nation. He spent every day since helping to finish the work that he started. Chris was committed to advancing America's values and interests, even when that meant putting himself in danger. Sean Smith was a husband and a father of two, who joined the Department ten years ago. Like Chris, Sean was one of our best. Prior to arriving in Benghazi, he served in Baghdad, Pretoria, Montreal and most recently The Hague. All the Americans we lost in yesterday's attacks made the ultimate sacrifice. We condemn this vicious and violent attack that took their lives, which they had committed to helping the Libyan people reach for a better future. America's diplomats and development experts stand on the front lines every day for our country. We are honored by the service of each and every one of them."

  • Rep. Allen West (R-Fla.)

    "Less than 24 hours after our nation remembered the heinous attacks of September 11, 2001, Americans find their sovereign soil attacked again as more American lives are lost at the hands of intolerant, barbaric, radical Muslims. United States Ambassador to Libya, Christopher Smith, and several embassy staff were murdered late yesterday when suspected religious extremists stormed the United States Consulate in Benghazi. This morning, my condolences and prayers go out to the families of the victims. Americans need to question whether the deaths of these innocent patriots could have been avoided. The Obama Administration touted the Arab Spring as an awakening of freedom, which we now see is a nightmare of Islamism. Even more concerning, is the initial response to these attacks last night from the embassy officials of the Obama Administration was to apologize for a Facebook video that supposedly hurt Muslim feelings. President Obama's policy of appeasement towards the Islamic world has manifested itself into a specter of unconscionable hatred. How anyone can believe this President is strong on national security and foreign policy is beyond my comprehension. President Obama has clearly surpassed former President Jimmy Carter and his actions during the Iranian Embassy crisis, as the weakest and most ineffective person to ever occupy the White House."

  • Senate Minority Leader Mitch McConnell (R-Ky.)

    "We learned yesterday, and are receiving reports this morning, of the attacks against the United States Embassy in Cairo and the U.S. Consulate in Benghazi, Libya. "In Benghazi our Ambassador Chris Stevens and three other Americans were killed in service to our nation. Our thoughts and sympathy today are with the families of these brave Americans. "These attacks remind us of the sacrifices made on a daily basis by foreign service officers, diplomatic security personnel, and our Marine Security Guards. "I join my colleagues in strongly condemning the murder of these innocent Americans. And I support employing every available tool at our disposal to ensure the safety of Americans overseas and to hunt down those responsible for these attacks. "Yesterday we commemorated the anniversary of the attacks of September 11, and today we are reminded that brave Americans serve us every day at the risk of their own lives. We honor the Americans we lost in Libya, and we will stand united in our response. "Among the things we can all agree on in Washington is that attacks on the U.S. and its representatives will be met with resolve, and that America's presence and defense of our national interests across the globe will not be deterred by the acts of violent extremists."

  • Senate Majority Leader Harry Reid (D-Nev.)

    "I was deeply disturbed and saddened to learn of the deaths of Ambassador Chris Stevens and three other American personnel in an attack on the U.S. Consulate in Libya. I join President Obama in condemning these senseless acts of violence. And my thoughts are with the families of those who were killed in this horrific attack. "It is too often forgotten that American diplomats risk their lives on a daily basis. Our diplomatic corps is filled with admirable and dedicated public servants. And the four Americans who lost their lives yesterday exemplified the courage and sacrifice that happens every day at diplomatic posts across the globe. "I have traveled to many of America's embassies abroad, and I have always been impressed by and grateful for the leadership and commitment of America's ambassadors and State Department personnel. Ambassador Stevens was a career Foreign Service officer and a former Peace Corps volunteer, who spent his life giving of his time and his talents to promote democracy and American values. "I support President Obama's directive to increase security at our diplomatic posts around the world, and to provide whatever resources necessary to keep our personnel in Libya safe. And I will continue to the monitor the situation as we learn more about these terrible events."

  • Sen. Frank Lautenberg (D-N.J.)

    "I join with President Obama and other Americans in condemning these horrible acts against our public servants, and offer my deepest condolences to the families that lost loved ones. "At at a time when we should be standing together against these senseless acts of violence, Mitt Romney offered an atrocious political response that undermines our unity in the face of threats to Americans around the world."

  • Elizabeth Warren

    "This senseless attack on our consulate in Libya is contemptible. My thoughts and prayers are with the families of those whose lives were lost. Right now, we should all honor the courage, dedication, and sacrifice of Ambassador Chris Stevens and the other Americans who gave their lives in the service of our country."

  • Sens. John McCain (R-Ariz.), Joe Lieberman (I-Conn.) and Lindsey Graham (R-S.C.)

    U.S. Senators John McCain (R-AZ), Joe Lieberman (I-CT) and Lindsey Graham (R-SC) today released the following joint statement regarding the attack on the U.S. Consulate in Benghazi, Libya yesterday. "We are anguished and outraged by the death of four citizens of the United States, including Ambassador Chris Stevens, during an attack on the U.S. Consulate in Benghazi. Our thoughts and prayers go out to their families. "Chris was one of America's finest and bravest diplomats, and also someone we considered a friend. In the midst of last year's uprising in Libya, Chris traveled at great personal risk to Benghazi to represent the country he loved as the U.S. envoy to the Libyan opposition. He advanced American interests and values in Libya and stood with the Libyan people throughout their struggle for freedom and during the challenging times that followed. His death at the hands of extremists is a tragic and awful loss for the people of both the United States and Libya. "There is still much we do not know about what happened in Benghazi yesterday. What is clear, however, is that the attackers must be apprehended and punished. We appreciate that senior Libyan leaders have condemned these cowardly attacks, and we now look to the Libyan government to ensure that the perpetrators are swiftly brought to justice, and that U.S. diplomats are protected. We have confidence that our own government will provide all necessary assistance to this end. "Yesterday's attack is a tragic and terrible reminder that - despite the hopes of the Arab Spring - the forces of violent extremism in the Middle East are far from defeated, and that the revolutions inspired by millions of people who dream of freedom and democracy can still be hijacked by small groups of violent extremists who are eager to kill to advance their evil ideology. "Despite this horrific attack, we cannot give in to the temptation to believe that our support for the democratic aspirations of people in Libya, Egypt, and elsewhere in the broader Middle East is naive or mistaken. We cannot resign ourselves to the false belief that the Arab Spring is doomed to be defined not by the desire for democracy and freedom that has inspired millions of people to peaceful action, but by the dark fanaticism of terrorists. "To follow this misguided path would not only be a victory for the extremists and their associates, but a betrayal of everything for which Chris Stevens and his colleagues stood and gave their lives. In short, it would be a betrayal of our own best ideals as Americans and our own enduring interest in using our great influence to support the overwhelming majority of people in the Middle East who want to be free from the kinds of murderers and terrorists who killed our people yesterday in Benghazi."

  • Republican National Committee Chairman Reince Priebus

  • Sen. Orrin Hatch (R-Utah)

  • Sen. Lisa Murkowski (R-Alaska)

  • Richard Burr (R-N.C.)

  • Sen. Robert Menendez (D-N.J.)

  • Mark Udall

  • Sen. John McCain (R-Ariz.)

  • Congressman Joe Baca

  • Rep. Keith Ellison

  • Gregory Meeks

  • John Barrow

  • Steny Hoyer

  • Ed Markey

  • Mike Michaud

  • Jeff Fortenberry

  • Kenny Marchant

  • Tom Price

  • Eric Cantor

  • Mike Pence

  • Peter Roskam

  • Senator Roy Blunt

  • John Shimkus

  • Speaker John Boehner

  • Gregg Harper

  • Pete Hoekstra

  • RepKevinBrady

  • Randy Forbes

  • Ileana Ros-Lehtinen

  • Michael Burgess, MD

  • U.S. Sen. Dick Lugar

  • Rep. Adam Smith

  • Steve Israel

  • Albio Sires

  • Joe Barton

  • Chris Coons

    "I join President Obama, Secretary Clinton and my colleagues in the Senate in strongly condemning the horrific attack targeting American U.S. Senator Chris Coons (D-Del.), a member of the Senate Foreign Relations Committee, said in a statement. "My heart goes out to the families of Ambassador Stevens and the other brave Americans who were killed in this senseless act of violence. They were committed public servants who courageously risked theirlives supporting the Libyan people and political transition. The service ofthese brave Americans epitomizes the best of our values, and their sacrifice will not be forgotten."

  • Glenn Nye

  • Mike Doyle

  • Senator John Boozman

  • Darrell Issa

  • Frank Pallone

  • Rep. Pete King

  • Jeff Flake