Moussa Koussa of Abdelbaset al-Megrahi, the alleged Pan Am Flight 103 bomber, whose involvement in the story is quite controversial. Several legal experts as well as the UN observer at the Lockerbie trial have vehemently challenged the verdict that convicted Megrahi. Koussa is also credited for the expulsion of Abu Nidal from Libya, whom he describes as a ruthless murderer and terrorist that Gaddafi allowed to live in Libya in 1986, the year the United States launched Operation El Dorado Canyon against Gaddafi for his association and harboring of terrorists. On 23 August 2002, the BBC reported that Abu Nidal was 'behind
Hans Köchler's Lockerbie trial observer mission Brown, reiterating his call for a public inquiry into the Lockerbie case and insisting that UN-appointed legal experts (from countries other than the UK, US and Libya) should be involved in such an inquiry. In the June 2008 edition of the Scottish lawyers' magazine "The Firm", Köchler referred to the 'totalitarian' nature of the second Lockerbie appeal process saying it "bears the hallmarks of an 'intelligence operation'." Köchler's reports as UN-appointed international observer of one of the most controversial criminal trials in British history have led to a global debate on the role of NGO observers in the context of