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The United Nations says the war in Ukraine has provoked the fastest-growing refugee crisis in Europe since World War Two. Leaving their homes and most of their possessions behind, many people have endured long, and often dangerous journeys across the country, before queuing for hours to cross the border.

When they reach safety, they are welcomed by family, friends and also the generosity of complete strangers. At Berlin’s central railway station, trains full of Ukrainian refugees are being met by volunteers with food, drink and offers of free accommodation. We join one German family in the living room of their home, together with the Ukrainian family they're now hosting.

We also hear from three people - two men and a woman - staying behind in Ukraine. They share their fears for family, and their willingness to pick up a weapon if they need to. And two British men who have joined an ‘international legion’ to fight alongside Ukrainian forces explain their decision in light of UK government warnings that they could be prosecuted.

(Photo: A woman (R) greets her friend from Kyiv after she disembarked from a train coming from Warsaw, carrying mostly people fleeing the war in Ukraine, 8 March, 2022. Credit: John MacDougall/AFP/Getty Images)