He has since written and lectured on his experiences in the former Yugoslavia questioning the numbers killed in the Srebrenica massacre , an event that came after his period of service in the area . He has challenged the findings of the International Criminal Tribunal for the former Yugoslavia ( ICTY ) and , in 2005 , contested the conclusions and reasoning of the Appeal Chamber 's 2004 judgment in the Krstić case that the crime of genocide was perpetrated at Srebrenica in July 1995 :
Srebrenica massacre
Srebrenica massacre
Lewis MacKenzie