The United States is working to assess any risks to its national security that may arise from the leaking of classified documents , especially related to the Russian invasion of Ukraine, according to the US Department of Defense announced Sunday.

This leak of classified documents, revealed by the New York Times last week, not only includes reports and documents related to the conflict in Ukraine, but also relates to very sensitive analyzes about the allies of the United States.

"Interagency collaboration has begun to assess the national security impact (leak) of these video documents and our allies and partners," said Pentagon spokeswoman Sabrina Singh.

According to US media analysis, these leaks may be beneficial to Moscow, as these documents show the extent to which US intelligence services have penetrated certain parts of the Russian military apparatus.

The US Department of Justice, which opened an investigation on Saturday, is trying to determine the source of the leaks and is still examining the validity of the published documents.

The Washington Post quoted US officials as saying that some of these documents were forged. But most of them are original and consistent with CIA reports circulating in the White House, the Pentagon and the State Department, according to the same source.

Some of them contain information related to the internal discussions of governments allied with the United States. For example, one document highlighted government discussions in South Korea about the possibility of supplying Ukraine with American artillery shells, according to The New York Times.