War in Europe: Russia invades Ukraine

Russia has invaded Ukraine and Russian President Vladimir Putin warns that Moscow's response will be "instant" if anyone tries to take Russia on.   People have been trying to flee the capital Kyiv as Ukraine urges the UN "to do everything possible" to stop a full-scale war.   In today’s podcast, we bring you reports from on the ground in Ukraine, on the day when war came to   Europe’s shores once more.