Sarah Montague speaks to the renowned US political scientist Francis Fukuyama. Thirty years ago, the Soviet Union collapsed and communist governments fell across Eastern Europe. Liberal democracy appeared to have won the Cold War and triumphed in the battle of ideas. Dr Fukuyama posed a question – if humanity had arrived at the most effective form of government, were we at the end of history? In the years since, liberal democracy has often seemed in retreat. But when Russia invaded Ukraine the world changed again. Francis Fukuyama is convinced that President Putin has miscalculated and is heading for defeat. What does that mean for the course of history and the progress of liberal democracy?