The North Korean leader’s sister Kim Yo Jong and other top officials could face prosecution under a special tribunal set to be established on aggression against Ukraine, human rights experts said Thursday, calling attention to Pyongyang’s support for Russia’s invasion.

The experts made the assessment at a conference in Seoul on Thursday promoting South Korea’s participation in setting up the tribunal next year. The event was organized by human rights groups, the Ukrainian Embassy and other European diplomatic missions.

Larissa van den Herik, an international law professor at Leiden University, explained at the event that the top three leaders of