Story highlights The feds accused Cartwright of providing and confirming classified information to two reporters

Cartwright became Vice Chairman of the Joint Chiefs of Staff in 2007 and retired in 2011

Washington, D.C. (CNN) The former vice chairman of the US Joint Chiefs of Staff pled guilty in federal court Monday, admitting he lied to the FBI when questioned about whether he provided two journalists with top secret information in 2012.

Retired four-star Gen. James Cartwright sat quietly with his attorney, former White House Counsel Gregory Craig, as Assistant US Attorney Leo J. Wise described the facts underlying the single charge of making false statements to federal investigators.

Cartwright, who became vice chairman of the Joint Chiefs of Staff in 2007, signed more than 36 non-disclosure agreements related to Department of Defense programs during his tenure, the government said. Cartwright retired in 2011, but kept his top secret security clearance.

After his retirement, Cartwright again signed a "Classified Information Non-Disclosure Agreement," which included warnings "that unauthorized disclosure ... by me could cause damage or irreparable injury to the United States or could be used to advantage by a foreign nation," according to the government's court filing detailing the charge against him.

In 2012, investigators showed Cartwright classified information, including top-secret information, in a book by David Sanger, a national security correspondent for The New York Times, but Cartwright denied providing the material to Sanger, the government said. The government did not reveal the title of Sanger's book. He has written two books on US foreign policy, the second of which was published in 2012 and titled, "Confront and Conceal: Obama's Secret Wars and Surprising Use of American Power."

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