 He served as Secretary General of the OSCE in Vienna from 2005 to 2011.On 10 December 2014 de Brichambaut was elected a judge to the International Criminal Court (ICC) in The Hague.In his capacity as presiding judge of Trial Chamber VII in 2016, he convicted former vice-president of the Democratic Republic of the Congo Jean-Pierre Bemba and four members of his legal team of interfering with witnesses; the verdicts marked the first time the court found suspects guilty of attempting to pervert the course of justice.