The system has been designed in such a way as to give the necessary tools to the court in judicial terms. The statute of the court is much more developed than the statute of any other international tribunal, precisely because in the treaty that created the court, states wanted to be very sure the court will be constrained to act impeccably.
When it was done, states themselves developed the rules of procedure and evidence of the court, which everywhere else, in other tribunals, were left to the judges. So as an institution, I think everything has been done to create a strong judicial institution. There will be a review conference in 2009 where states may determine that this or that has not been done perfectly the first time and may change it.
But the whole system also has been based, beyond the judicial, on cooperation. The court has no army; the court has no police. So as much as the court may be successful in administering justice judicially, there will always be this need for cooperation from the outside in arrests, in surrenders, in providing information, evidence, and the like.