Leaked documents from the Pentagon have revealed that American intelligence has deeply reached into global intelligence, including in Russia.

The documents also show details of the Kremlin's weakened military capabilities more than a year after invading Ukraine.

Leaked Pentagon documents show spies are deeply ingrained in Russian intelligence services and Putin's army is ravaged after a year of fighting - but also reveal US is spying on ALLIES including South Korea, Ukraine and UK https://t.co/IIf4UtFvfs <They Spy, We Spy, We All Spy

— KulganofCrydee (@KulganofCrydee) April 9, 2023

The details

"While the breach underscored America's ability to infiltrate Moscow's upper echelons, it has also sparked fears that Russian intelligence may now have a clearer understanding of exactly what the US does and does not already understand, providing an opportunity to cut off sources of information," the Daily Mail reported.

"The leak comes amid speculation that a wave of classified document breaches could be being orchestrated by Russia, in what was described by a senior intelligence official as 'a nightmare for the Five Eyes' - a reference to the intelligence sharing agreement between the United States, Britain, Australia, New Zealand and Canada," it added.

Leaked Pentagon documents show how deep US has penetrated Russian intelligence https://t.co/S2C2aGlee6

— MSN (@MSN) April 8, 2023

Investigating the leak

"The Justice Department announced it would open an investigation into the leak of documents, which saw the release of U.S. intelligence related to Ukraine to China to Israel. The Defense Department is also investigating the matter," the Washington Examiner reported.

"The Department of Defense is actively reviewing the matter, and has made a formal referral to the Department of Justice for investigation," a DOD spokesperson told the Examiner.

'The Internet Is Forever': Musk Mocks Pentagon Demand To Delete Leaked Classified Docs https://t.co/2B0QsFc8Pz

— zerohedge (@zerohedge) April 7, 2023

The Pentagon is working to remove the documents from websites, including Twitter.

Twitter CEO Elon Musk mocked the request according to reports, stating "the Internet is forever."

The leak comes as tensions continue to grow between the U.S. and Russia over President Vladimir Putin's invasion of the former Soviet republic.

The U.S. government has supplied billions of dollars in funding and supplies to help Ukraine defend itself against the Russian military, with a large number of casualties on both sides in the conflict.

The latest leak is likely only to worsen the situation as many details were revealed of the U.S. infiltrating Russian intelligence and plans for future efforts in Ukraine.