Beijing and the Vatican have improved relations in recent years as China's Catholic population has grown.
"For the honour of the Blessed Trinity... we declare and define Blessed Teresa of Calcutta to be a Saint."
The sainthood ceremony comes one day short of the 19th anniversary of Teresa's death
He will pray in the cell where Polish priest and saint Maximilian Kolbe died after taking the place of a condemned man.
"The Holy Father has understood the importance of establishing the truth."
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