INTERNATIONAL COURT OF JUSTICE, CASE CONCERNING AHMADOU SADIO DIALLO (REPUBLIC OF GUINEA V DEMOCRATIC REPUBLIC OF THE CONGO) JUDGEMENT OF 30 NOVEMBER 2010

The International Court of Justice's (ICJ) judgment in the case concerning Ahmadou Sadio Siallo (Republic of Guinea V Democratic Republic of the Congo) is a remarkable decision contributing to the widening and deepening of international law and has consequences for several fundamental questions, including the role of the ICJ and international law in making human rights effective, erga omnes and jus cogens rules, customary law, evidence, and several substantive rules. In bringing the transformation of international law one step further, the Diallo judgment develops the ICJ as 'the principal judicial organ of the United Nations' at the top of an open international law system. Adapted from the source document. Reprinted by permission of Cambridge University Press