The US pope, who has drawn the ire of President Donald Trump, has repeatedly criticised world leaders, without naming individuals.

"Leo seems convinced that the world needs to hear explicit condemnation of injustice and aggression," says a retired Vatican correspondent who covered three papacies.

Il Papa approda a Luanda per la terza tappa del suo viaggio africano dopo Algeria e Camerun. Focus sulle disuguaglianze e maledizione risorse