It's now more than 1,000 days after Russia's invasion of Ukraine, and there are signs that the conflict is taking on a new dimension. The use of Western-supplied long-range missiles by Ukraine on targets within Russia led to renewed sabre-rattling from Vladimir Putin, sparking questions over whether Moscow could consider using nuclear weapons. But how much has actually changed on the ground? What are North Korean troops doing? And is just endgame, and we're counting down to some compromise? To examine all this, Laura Byrne is joined by Donnacha Ó Beacháin, professor of politics at Dublin City University.