In March 2010 he testified to the US Congress that according to the chief of staff of the Dutch Army at the time of the incident, the fall of Srebrenica was caused by lack of readiness related to the Dutch being more concerned with internal 'socialisation' of the military than fighting capacity. Sheehan stated it was in part due to homosexual men serving in the military. During the same testimony, Sheehan stated that gays weakened the army, while attraction between men and women in gender-integrated units would not. Speculation has it that Sheehan meant General Henk van den Breemen, Dutch chief of staff at the time of the Srebrenica genocide. General van den Breemen denied having said such a thing and called Sheehan's comments "total nonsense". Dutch Minister of Defense Eimert van Middelkoop stated that Sheehan's statement was "disgraceful," "unworthy of anyone in the military". Prime-Minister Jan Peter Balkenende of the Netherlands stated that Sheehan's words are "shameful", "outrageous", "beneath contempt" and "disrespectful towards all troops involved". Dutch advocates of gay rights, organized in the Pink Army (foundation) and the Stichting Homosexualiteit en Krijgsmacht ("Foundation Homosexuality and Armed Forces"), announced a libel lawsuit against Sheehan, demanded public apologies, and for Sheehan to follow sensitivity training. The majority of the Dutch parliament voiced their support for the class action.