Allegations. UN member countries that support South Africa’s complaint at the UN:

Presidents of Algeria, Bolivia, Brazil, Colombia, Cuba, Iran, Türkiye, and Venezuela have all described Israel’s actions as a genocide, as has the Palestinian President. State officials and representatives from Bangladesh, Egypt, Honduras, Iraq, Jordan, Libya, Malaysia, Namibia, Pakistan, Syria, and Tunisia.

They all have such impressive credibility on human rights and totally don’t have an ax to grind against or an Iran to suck up to. /s