Should NATO be preparing us all to enter the war against Russia? - a podcast by BBC Radio 4

Military officials in Ukraine say their troops have so far 'held the line' against the Russian offensive in the east of the country. President Zelensky says Russian forces have significantly increased the intensity of their assault and he appealed again for more weapons.

Today's Nick Robinson speaks to Margaret MacMillan, emeritus professor of international history at Oxford University, and Major General Tim Cross, retired British Army officer who served in Iraq and lead a NATO response for the humanitarian and refugee crisis in the Balkans.(Image: NATO flag flies in front of the Independence Monument in Kyiv, Credit: REUTERS/Valentyn Ogirenko)

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