The Defense Department is conducting a damage assessment on the leak of some 91,000 classified documents on the Afghanistan war.
Pentagon spokesman Col. Dave Lapan told reporters Monday the review could take "days, if not weeks" because the military has yet to see all of the leaked reports.
Wikileaks.org posted the classified documents to its Web site Sunday night, but access was difficult, apparently because the site was overwhelmed with traffic.
The source of the leak is still in question. Lapan said that while the military has detained an Army soldier in Kuwait for transmitting classified information, the latest documents could have come from anyone with a secret-level clearance.
THIS IS A BREAKING NEWS UPDATE. Check back soon for further information. AP's earlier story is below.
LONDON (AP) — The release of some 91,000 secret U.S. military documents on the Afghanistan war is just the beginning, WikiLeaks founder Julian Assange promised Monday, adding that he still has thousands more Afghan files to post online.
The White House, Britain and Pakistan have all condemned the online whistle-blowing group's release Sunday of the classified documents, one of the largest unauthorized disclosures in military history. The Afghan government in Kabul said it was "shocked" at the release but insisted most of the information was not new.
The documents cover some known aspects of the troubled nine-year conflict: U.S. special operations forces have targeted militants without trial, Afghans have been killed by accident, and U.S. officials have been infuriated by alleged Pakistani intelligence cooperation with the very insurgent groups bent on killing Americans.
Still, they also included unreported incidents of Afghan civilian killings and covert operations against Taliban figures.
Assange told reporters in London that what's been reported so far on the leaked documents has "only scratched the surface" and said some 15,000 files on Afghanistan are still being vetted by his organization.
He said he believed that "thousands" of U.S. attacks in Afghanistan could be investigated for evidence of war crimes, although he acknowledged that such claims would have to be tested in court.
"It is up to a court to decide really if something in the end is a crime," he said.
Assange pointed in particular to a deadly missile strike ordered by Taskforce 373, a unit allegedly charged with hunting down and killing senior Taliban targets. He said there was also evidence of cover-ups when civilians were killed, including what he called a suspiciously high number of casualties that U.S. forces attributed to ricochet wounds.
White House national security adviser Gen. Jim Jones said the release of the documents "put the lives of Americans and our partners at risk." In a statement, he took pains to point out that the documents describe a period from January 2004 to December 2009, mostly during the administration of President George W. Bush.
Jones noted that time period was before President Obama announced a new strategy.
Pakistan's Ambassador Husain Haqqani agreed, saying the documents "do not reflect the current on-ground realities," in which his country and Washington are "jointly endeavoring to defeat al-Qaida and its Taliban allies."
The U.S. and Pakistan assigned teams of analysts to read the records online to assess whether sources or locations were at risk.
Pakistan's powerful spy agency, Inter-Services Intelligence, said Monday that the accusations it had close connections to Taliban militants were malicious and unsubstantiated.
A senior ISI official said they were from unverified raw intelligence reports and were meant to impugn the reputation of the spy agency. He spoke on condition of anonymity in line with the agency's policy.
Hamid Gul, a former head of the ISI who is mentioned many times in the documents, also denied allegations that he'd worked with the insurgents.
The New York Times said the documents reveal that only a short time ago, there was far less harmony in U.S. and Pakistani exchanges.
The Times says the "raw intelligence assessments" by lower level military officers suggest that Pakistan "allows representatives of its spy service to meet directly with the Taliban in secret strategy sessions to organize networks of militant groups that fight against American soldiers in Afghanistan, and even hatch plots to assassinate Afghan leaders."
The Guardian, however, interpreted the documents differently, saying they "fail to provide a convincing smoking gun" for complicity between the Pakistan intelligence services and the Taliban.
The leaked records include detailed descriptions of raids carried out by a secretive U.S. special operations unit called Task Force 373 against what U.S. officials considered high-value insurgent and terrorist targets. Some of the raids resulted in unintended killings of Afghan civilians, according to the documentation.
During the targeting and killing of Libyan fighter Abu Laith al-Libi, described in the documents as a senior al-Qaida military commander, the death tally was reported as six enemy fighters and seven noncombatants — all children.
Task Force 373 selected its targets from 2,000 senior Taliban and al-Qaida figures posted on a "kill or capture" list, known as JPEL, the Joint Prioritized Effects List, the Guardian said.
U.S. government agencies have been bracing for the deluge of classified documents since the leak of helicopter cockpit video of a 2007 firefight in Baghdad. That was blamed on a U.S. Army intelligence analyst, Spc. Bradley Manning, 22, of Potomac, Md. He was charged with releasing classified information earlier this month. Manning had bragged online that he downloaded 260,000 classified U.S. cables and transmitted them to Wikileaks.org.
Assange on Monday compared the impact of the released material to the opening of the East German secret police archives. "This is the equivalent of opening the Stasi archives," he said.
He also said his group had many more documents on other subjects, including files on countries from across the globe.
"We have built up an enormous backlog of whistleblower disclosures," he said.
Assange said that he believed more material would flood amid the blaze of publicity.
"It is our experience that courage is contagious," he said. "Sources are encouraged by the opportunities that they see before them."
Dozier reported from Washington. Associated Press writers Kirsten Grieshaber in Berlin and Robert Burns in Washington contributed to this report.
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