Let's remember that IHAT was originally introduced to divert attempts to place British servicemen and women in the international dock by affirming that we would hold our own credible investigations - I believe the test cases were few and seemingly, valid. The principle was a sound one and designed to defend our troops from a court which may have a different political agenda and a lower threshold for proof. Where it all went wrong was when the shysters got a sniff of the prospect of a pay out and the likes of Shiner started to decimate the principle in favour of their own personal and financial interests.