Osama Bin Laden finally paid the price for atrocities such as 9/11 when he was found by US Special Forces at his luxury lair in Pakistan.
He was killed as he cowered behind his wife - and President Barack Obama watched live via cameras worn by the troops. The 54-year-old warlord was buried in the north Arabian sea, his terror reign over at last.
President Obama's eyes were glued to a screen showing the dramatic moments leading to the death of Bin Laden.
That information, given four years ago, led Special Forces to the compound last August. A US security source said: "We were shocked by what we saw." The three-storey Abbottabad complex had been built in 2005 at a cost of $1million and was heavily protected.
CIA interest grew further when it was established it had no phone or internet link. Bin Laden was known to avoid all electronic communication - fearing his location may be tracked by satellite.
Following his death, the Americans used DNA evidence to prove with "99.9 per cent certainty" they had their man.
His samples were compared with some from his sister's brain - collected after her cancer death several years ago.
Photos of Bin Laden's corpse were also compared with exact measurements of his features using photo-visual technology.