The publisher of a book purporting to chronicle an insider account of the Navy SEAL operation to raid Osama Bin Laden's Pakistan compound will begin sales on Tuesday, ignoring the Pentagon’s legal threats against the author.

­Despite a potential lawsuit against the author of "No Easy Day," Penguin Books is not delaying or canceling its highly anticipated release.

“At this time, we see no reason to change our plans,” Christine Ball, spokeswoman for Penguin Group USA’s Dutton imprint, said in a statement. Rather than delay the book’s release, the publisher moved up its sale date from September 11 to September 4 “to let the book speak for itself.”

The publisher has also increased its initial print run from 200,000 copies to 575,000.