The ongoing case of South Africa v. Israel will lead the ICJ to examine, for the first time, whether a State may intervene under Article 62 of the ICJ Statute to ensure compliance with erga omnes partes obligations arising from the Genocide Convention. While the ICJ has established that States have standing to initiate proceedings for breaches of certain erga omnes partes obligations, without the need to demonstrate a special interest, doubts persist regarding whether intervenors under Article 62 should enjoy the same possibility. The present article explores potential objections to discretionary intervention in disputes involving erga omnes partes obligations.