This book sought to examine deeply the challenges the International Criminal Court faces with States cooperation. It took into consideration and looked at the current cooperation between the Court and its Member States and what are still the challenges. The research found that even though there seems to be cooperation mostly at the stage of ratifying the Statute, that alone is not enough and more to it is much needed like providing the court with the political support it needs at all stages right from investigations through the arresting and trying of suspects of the international crimes. The study also found out that, even though there are laws in particular the Rome statute supposed to govern the cooperation and oblige all member States to cooperate fully with the court, the laws are too lax and ignored mostly.