Meet Diia: the Ukrainian app used to do taxes … and report Russian soldiers

Award-winning app initially aimed at helping people access public services is now used for wartime efforts

It is the award-winning app that allows Ukrainians to report Russian soldiers in their neighbourhoods while also uploading their tax returns, renewing their passports or claiming a free student bus fare.

Now the deputy prime minister, Mykhailo Federov, has revealed the inside story of how 25 developers, who were set on transforming Ukraine into one of the world's most digitally advanced societies, have kept the country running during wartime.