[Chidi Anselm Odinkalu (Twitter: @ChidiOdinkalu) is a Professor of Practice in International Human Rights Law at the Fletcher School. Sharon Nakandha (Twitter: @SherryKyama) is a Program Manager, Accountability and Justice with Open Society-Africa.] At the establishment of the International Criminal Court, (ICC) 25 years ago, then Foreign Secretary of the United Kingdom, Robin Cook, famously said of it that it “is not…