The special forces commando who brought down Osama bin Laden said he had no choice but to kill the terrorist kingpin, fearing he had a gun or suicide explosives close at hand.

The Navy SEAL team member, identified only as "The Shooter" by Esquire magazine, describes the three shots that brought sudden justice to the world's most despised man.

Bin Laden appeared to push his youngest wife toward the advancing SEALs before the fatal bullets were fired inside his safe house in Abbottabad, Pakistan, on May 2, 2011.

"He's got a gun on a shelf right there, the short AK he's famous for. And he's moving forward," the shooter said.

"I don't know if she's got a vest and she's being pushed to martyr them both. He's got a gun within reach. He's a threat. I need to get a head shot so he won't have a chance to clack himself off [blow himself up]."

In that fateful moment, the shooter told the mag he knew what he had to do.

"In that second, I shot him, two times in the forehead. Bap! Bap! The second time as he's going down. He crumpled onto the floor in front of his bed and I hit him again, Bap! same place," he said.

"That time I used my EOTech red-dot holo sight. He was dead. Not moving. His tongue was out. I watched him take his last breaths, just a reflex breath."

Read more at the New York Post.