UNITED NATIONS More than one decade after the International Criminal Court (ICC) was set up, a new age of accountability is replacing the old era of impunity, Secretary-General Ban Ki-moon said Monday. Twelve years ago when world leaders gathering in Rome for its establishment, few could have believed, then, that this court would spring so vigorously into life, the UN chief said at the first-ever review conference of the ICC held in Kampala, Uganda, according to the text of his speech released at UN Headquarters in New York. Ban Ki-moon called on all nations to adhere to the tribunal that seeks to try perpetrators of genocide, war crimes and crimes against humanity worldwide. So far 111 countries have become parties to the Rome Statute that established the ICC, while 37 others have signed but not yet ratified it. But some of the worlds largest and most powerful countries, including China, India, Russia and the United States, have not joined. Pakistan has supported the aims of the International Court and voted for the Rome Statute in 1998. However, Pakistan has not signed the agreement on the basis of reservations. Among Pakistans objections is that there is Lack of immunity for heads of state in the courts statute. In his speech, Ban said, Seldom since the founding of the United Nations itself has such a resounding blow been struck for peace, justice and human rights. Todays gathering, the Secretary-General said, marks an occasion to bolster our collective determination that crimes of humanity cannot go unpunished. The new age of accountability, he noted, dawned with the Nuremberg and Tokyo Tribunals, gaining strength with tribunals for Rwanda, the former Yugoslavia, Sierra Leone, Cambodia and Lebanon. Now we have the ICC - permanent, increasingly powerful, casting a long shadow. There is no going back, Ban stressed. In this new age of accountability, those who commit the worst of human crimes - be they rank-and-file foot soldiers or top political leaders - will be held responsible, he said. Former Serbian president Slobodan Milosevic and former Liberian leader Charles Taylor are among those who have already been called to justice. Not long ago, the Secretary-General said, this would have been unimaginable. But for the ICC to have the reach it needs, it must have universal support. Only then will perpetrators have no place to hide, he said. The ICC is a court of last resort, exercising jurisdiction only where national courts do not or cannot take action themselves, Ban pointed out. This is important: where a State is unwilling to genuinely investigate and prosecute perpetrators, the Court can get involved, he said. No government or justice system that is complicit in international crimes can any longer shield the perpetrators from justice.