The US is trying to assess the risks associated with the leak of classified documents, which mainly related to the hacking of Russia in Ukraine, for their national security, the Pentagon reported yesterday Sunday.

However, according to the Washington Post, which cited US officials, although some appear to be fakes or the result of stitching, however most correspond to CIA reports, circulating in the White House, the Pentagon or even the State Department, according to the same sources.

The leak of secret documents, revealed last week by the New York Times, concerns Mr reason estimates and reports of US intelligence agencies on developments in the war in Ukraine, as well as Washington’s allies.

“Interagency cooperation has begun to assess the potential impact (of the leak) of these photographed documents on our national security and on our allies and partners,” said Sabrina Singh, a Pentagon spokeswoman.

The documents, released on social networking sites, may prove valuable to Moscow, as they reveal the extent to which the American spy services have infiltrated the Russian military and state apparatus, commented American media.

The Justice Department, which began an investigation on Saturday, is trying to track down the source of the leak and is still looking into whether any of the leaked documents are authentic.

Some contain information about allies. For example, one deals with discussions within the South Korean government about sending shells suitable for US-made artillery to Ukraine, the New York Times explained.