I served in the Navy in the early 90's. In 1992 the ship I served on, the USS Schenectady (LST-1185), was one of the first ships to make a port call in Kuwait City since the first Gulf War. We took a tour around the city to different sites of Kuwaiti resistance. safe houses and the like. We also saw the places where people were arrested by Iraqi forces and disappeared. It appears they found some of them:

A skull with a bullet hole in the temple, lying among 16 male corpses, and another skull protruding from a deep pit provided what appeared to be the first grisly clues to the fate of 605 Kuwaitis kidnapped by the Iraqi regime during its occupation of its neighbor more than 12 years ago.
An intensive search for Kuwaiti soldiers and civilians missing since the first Persian Gulf war may have ended at this remote site, where skulls, brown pants and bones sticking up eerily from the sand were unearthed in the first day of digging at the site.
When Saddam Hussein fell, there were grim hopes that the missing might still be alive but starving in one of the regime's prisons. Coalition searches found the prisons empty.
Instead, it now appears the Kuwaitis were already dead.

A sovereign nation was taken by force, and subsequently expelled. The aggressor nation kidnapped hundreds of Kuwaiti's and put them to death. Do we still need too come up with reasons for destroying the Saddamite Baathist regime?