'Shell-shocked': Russia's invasion of Ukraine begins

The Russian President Vladimir Putin has pulled the trigger for the invasion of Ukraine, after a televised speech that shocked the world.  As explosions rang out across Ukraine, western nations could do little more than monitor what was unfolding.  Today, Russia expert and former Moscow resident Professor Samuel Greene helps us make sense of a day that will reshape the world, and Kyiv resident Olga Polotska describes the moment Russia’s strikes on her hometown began.  Featured:  Professor Samuel Greene, Director, King’s Russia Institute, King’s College London  Dr Olga Polotska, Executive Director, Ukraine National Research Foundation, Kyiv