Most believe Jozef Wesolowski will be tried in a Vatican court, but a trial elsewhere would counter suspicions that a Vatican trial would be a cover-up.
Former Israeli President Shimon Peres asked Pope Francis to head a parallel United Nations called the "United Religions" to counter religious extremism in the world today.
"Without doubt Poland considers the acts that the archbishop is alleged to have carried out as particularly repugnant."
Because Jozef Wesolowski is no longer an archbishop nor is he a Vatican diplomat, when his appeals are exhausted, he "might also be subjected to judicial procedures from the courts."
"You are brothers who speak the same language. When you speak the same language in a family, there is also a human hope."
Celebrating Mass before some 50,000 people, Pope Francis prayed that Christian values overcome demoralization in economically successful societies.
"The hope held out by the Gospel is the antidote to the spirit of despair that seems to grow like cancer in societies which are outwardly affluent yet often experience inner sadness and emptiness," the pope said Friday in his homily at the World Cup Stadium in Daejeon.
Pope Francis formally asked U.N. agencies and the entire international community "to take action to end the humanitarian tragedy now underway" in northeastern Iraq.
In a letter signed Aug. 9 but released by the Vatican after it had been delivered, Pope Francis told U.N. Secretary-General Ban Ki-moon immediate action was needed "to stop and to prevent further systematic violence against ethnic and religious minorities."
Francis Chronicles: "One cannot generate hatred in God's name," Pope Francis said Sunday. "One cannot make war in God's name!"
Pope Francis is dispatching Cardinal Fernando Filoni as his personal envoy to northern Iraq, where Islamist militias have sent thousands of Christians and other religious minorities fleeing for their lives, the Vatican said Friday.
The Vatican announced the appointment of Filoni, a former papal nuncio to Iraq and Jordan, only a day after the pope launched a fresh appeal for the welfare of Christians affected by the violence there.
The pope also made a "pressing appeal to the international community to take initiatives to put an end to the humanitarian drama underway."