Pope tackles Covid pandemic and rising nationalism in third encyclical

Letter addressed to whole of Catholic church urges nations to work towards a just world

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Pope Francis has warned against myopic, extremist, resentful and aggressive nationalism" in some countries, and a growing loss of the sense of history" in a major document outlining his view of the world.

Fratelli Tutti - the third encyclical, a pastoral letter addressed to the whole of the Catholic church, of his papacy - was published on Sunday, the feast of St Francis of Assisi, amid global uncertainty and anxiety over the Covid-19 pandemic and rising populism.