Your Best Contribution to Society

There's no way to confirm this, from Al Jazeera (via), but though it seems scarcely believable, it does tie in with other reports: for instance the BBC This World documentary from 2004, which uncovered documentary evidence that North Korea was testing new chemical weapons on the families of dissidents and political prisoners.

When Im Chun-yong made his daring escape from North Korea, with a handful of his special forces men, there were many reasons why the North Korean government was intent on stopping them. They were, after all, part of Kim Jong-il's elite commandos - privy to a wealth of military secrets and insights into the workings of the reclusive regime.

But among the accounts they carried with them is one of the most shocking yet to emerge – namely the use of humans, specifically mentally or physically handicapped children, to test North Korea's biological and chemical weapons.

"If you are born mentally or physically deficient, says Im, the government says your best contribution to society… is as a guinea pig for biological and chemical weapons testing."
Even after settling into the relative safety of South Korea, for 10 years Im held on to this secret, saying it was too horrific to recount.

But with Kim's health reportedly failing, and the country appearing increasingly unpredictable, Im felt it was time he spoke out.

The former military captain says it was in the early 1990s, that he watched his then commander wrestle with giving up his 12-year-old daughter who was mentally ill.

The commander, he says, initially resisted, but after mounting pressure from his military superiors, he gave in.

Im watched as the girl was taken away. She was never seen again.

One of Im's own men later gave him an eyewitness account of human-testing.

Asked to guard a secret facility on an island off North Korea's west coast, Im says the soldier saw a number of people forced into a glass chamber.

"Poisonous gas was injected in," Im says. "He watched doctors time how long it took for them to die."

Other North Korean defectors have long alleged that the secretive nation has been using political prisoners as experimental test subjects.

Some have detailed how inmates were shipped from various concentration camps to so-called chemical "factories".

But Im's is the first account of mentally-ill or physically challenged children being used.

Im's explanation for his ten-year delay in revealing this - "too horrific to recount" - doesn't perhaps help his credibility, but then again it's impossible for us to judge the pressures on someone in his position:

Even a decade after his escape, the threat he still poses to the North Korean government means that he now lives under the constant protection of South Korea's National Intelligence Service.