In this Wednesday, Sept. 26, 2018, file photo, Pope Francis delivers his message during his weekly general audience in St. Peter's Square at the Vatican. The former Vatican ambassador who accused three popes and their advisers of covering up for a disgraced American ex-cardinal has denounced Pope Francis' refusal to directly respond to his claims and challenged the Vatican to say what it knows about the scandal. (AP Photo/Andrew Medichini, File)
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