As evidence of war crimes by Russian forces in Ukraine mount, we're joined by NUIG's Prof Ray Murphy to discuss what could happen next. When is a crime a war crime, how are they prosecuted, and what leaders have previously been responsible for such actions?The Explainer is brought to you by The Journal. Providing open access to valuable journalism in Ireland has been the aim of The Journal for a decade. You can contribute to ensure we can keep questioning, investigating, debunking, explaining and informing at www.thejournal.ie/contribute/