WASHINGTON – A member of the U.S. Navy SEAL team that killed Osama bin Laden has written a firsthand account of the operation, triggering more questions about the possible public release of classified information involving the historic assault of the terror leader's compound in Pakistan.

U.S. military officials say they do not believe the book has been read or cleared by the Defense Department, which reviews publications by military members to make sure that no classified material is revealed.

The book, titled "No Easy Day" and scheduled to be released next month on the 11th anniversary of the Sept. 11 terrorist attacks, comes amid a heated debate over whether members of the military – both active duty and retired – should engage in political battles.