WASHINGTON (AP) — The online leaks of scores of highly classified documents about the Ukraine war present a “very serious” risk to national security, and senior leaders are quickly taking steps to mitigate the damage, a top Pentagon spokesman said Monday. And as the public airing of the data sends shockwaves across the U.S. government, the White House said there are concerns there could be additional leaks.
Chris Meagher, assistant to the secretary of defense for public affairs, told reporters that Defense Secretary Lloyd Austin first became aware on Thursday that a number of classified briefing slides detailing the U.S. military efforts in the Ukraine war and intelligence involving other nations were leaked.
In the days since, Austin has reached out to allies, held daily meetings to assess the damage and set up a group not only to assess the scope of the information lost but review who has access to those briefings. The department is looking closely at “how this type of information is distributed and to whom,” Meagher said.
A defense official who spoke to The Associated Press on the condition of anonymity to discuss sensitive matters said the Pentagon has now taken steps to reduce the number of people who have access to those briefings. The official said the Pentagon regularly reviews access lists to weigh who has a need to know and have access to classified material.
At the White House, National Security Council spokesman John Kirby was asked if the U.S. was bracing for more online releases.
“The truth and the honest answer to your question is: We don’t know,” he said. “And is that a matter of concern to us? You’re darn right it is.”
Kirby said at this point, “we don’t know who’s behind this, we don’t know what the motive is.”
And he said as U.S. authorities go through the documents that were posted online, they are still trying to determine their validity, but have found that at least some of the papers “have been doctored.”
He and others would not go into detail, but at least one of the documents shows estimates of Russian troops deaths in the Ukraine war that are significantly lower than numbers publicly stated by U.S. officials. Under a section titled “Total Assessed Losses,” one document lists 16,000-17,500 Russian casualties and up to 71,000 Ukrainian casualties. Gen. Mark Milley, chairman of the Joint Chiefs of Staff, said publicly last November that Russia has lost “well over” 100,000 soldiers, and Ukraine had lost about that many also. And those estimates have continued to climb in recent months, although officials have stopped providing more exact numbers.
At the State Department, spokesman Vedant Patel told reporters Monday that U.S. officials “are engaging with allies and partners at high levels over this, including to reassure them of our commitment to safeguarding intelligence and the fidelity of securing our partnerships.”
The U.S. officials declined to provide any specifics, including about the expanse of the release, how it happened and to which country leaders the U.S. has spoken. Patel added that there is “no question” the documents’ release present a risk to national security.
Investigators who specialize in tracking social media, including at the journalism organization Bellingcat, say the documents may have been circulating for months in private internet chats on the Discord discussion platform. Asked if the Pentagon has contacted Discord, Meagher referred questions to the Justice Department, which has opened a criminal investigation into the leaks.
The slides, which eventually were distributed on more mainstream sites such as Twitter, detail U.S. training and equipment schedules to support Ukraine, assessments of losses, what the U.S. is monitoring on key allies and strategic partners, and what moves Russia may be taking to undermine those relationships.
While the Pentagon has been careful not to authenticate the information contained in any specific document, overall “they present a very serious risk to national security and have the potential to spread disinformation,” said Meagher. “We’re being very careful and watching where this is being posted and amplified.”
The documents are labeled secret and top secret and in some cases resemble routine updates that the U.S. military’s Joint Staff would produce daily but not distribute publicly.
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