The last decade marked the unprecedented increase in the importance of the role of judicial bodies in the maintenance of international legal order and their assumption of hitherto unprecedented judicial powers. The principle of consent and its implications are the issues that pose major questions on possible limitations in this process. The tension between these conflicting factors has been witnessed in the treatment by the ICJ of the disputes related to the right of convicted foreign nationals to consular notification. In LaGrand, the Court made substantial advances in terms of diminishing the role of the principle of consent as an obstacle to proper judicial enforcement of international obligations. Avena – a similar case – demonstrates that such an approach has acquired an important degree of consistency in the ICJ's jurisprudence.