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U.S. President Donald Trump, first lady Melania Trump and daughter Ivanka Trump, left, meet with Pope Francis, Wednesday, May 24, 2017, at the Vatican. As is tradition, the pope and president then exchanged gifts. Mr. Trump’s visit to the Eternal City comes after two stops in the Middle East where he visited the cradles of Islam and Judaism. Photo: AP

Trump, midway through his grueling nine-day maiden international journey, called upon the pontiff at the Vatican early Wednesday where the two had a private 30-minute meeting laden with religious symbolism and ancient protocol. Photo: AP

The president greeted Francis in Sala del Tronetto, the room of the little throne, on the second floor of Apostolic Palace Wednesday morning. Mr. Trump is the 13th president to visit the Vatican and, as part of his tour, he will view the Sistine Chapel. Photo: AP

Donald Trump and his wife Melania are welcomed by Prefect of the Papal Household, Mons. Georg Gaenswein, as he arrives at the San Damaso courtyard for his private audience with Pope Francis, at the Vatican, Wednesday, May 24, 2017. Photo: AP

U.S. President Donald Trump visits the Western Wall, Monday, May 22, 2017, in Jerusalem. He toured the Church of the Holy Sepulchre, which by Christian tradition is where Jesus was crucified and the location of his tomb. Wearing a black skullcap, he became the first sitting president to visit the Western Wall in Jerusalem’s Old City, the most holy site at which Jews can pray. Photo: AP

Melania Trump touches the Western Wall, Judaism's holiest prayer site, in Jerusalem's Old City Monday, May 22, 2017. Photo: AP

U.S. President Donald Trump (L) embraces Israel's Prime Minister Benjamin Netanyahu after his remarks at the Israel Museum in Jerusalem May 23, 2017. Trump reaffirmed his commitment to strong ties with the nation’s longtime ally and urged both the Israelis and the Palestinians to begin the process of reaching a peace deal. Photo: REUTERS

U.S. President Donald Trump and first lady Melania lay a wreath during a ceremony commemorating the six million Jews killed by the Nazis in the Holocaust, in the Hall of Remembrance at Yad Vashem Holocaust memorial in Jerusalem May 23, 2017. They were joined by Israeli Prime Minister Benjamin Netanyahu and his wife, Sara, as well as Trump’s daughter Ivanka and son-in-law Jared Kushner, who are both White House senior advisers. Photo: REUTERS

A still image taken from video shows Yad Vashem Chairman Avner Shalev presenting to U.S. President Donald Trump and first lady Melania a token of remembrance, an exact replica of the original Holocaust-era personal album that belonged to Ester Goldstein, who perished in the Holocaust, at Yad Vashem Holocaust memorial in Jerusalem May 23, 2017. Photo: REUTERS

U.S. President Donald Trump (2nd L), senior advisor Jared Kushner (3rd L), first lady Melania Trump (C) and Ivanka Trump, the president's daughter, listens to Rabbi Shmuel Rabinovitch (R) during a visit to the Western Wall, the holiest site where Jews can pray, in Jerusalem’s Old City on May 22, 2017. Photo: AFP

U.S. President Donald Trump and first lady Melania Trump walk in a procession to the Church of the Holy Sepulchre in Jerusalem May 22, 2017. Photo: REUTERS

White House senior advisor Jared Kushner (C) talks to his wife Ivanka Trump during a welcoming ceremony for her father U.S. President Donald Trump at Ben Gurion International Airport in Tel Aviv, Israel May 22, 2017. Photo: REUTERS

First lady Melania Trump visits GE All women business process service center in Riyadh, Saudi Arabia, May 21, 2017. In Saudi Arabia, Donald Trump addressed dozens of Arab leaders and urged them to fight extremists at home and isolate Iran, which he depicted as menace to the region. Photo: REUTERS

U.S. first lady Melania Trump speaks with Saudi Arabia's Crown Prince Muhammad bin Nayef during an arrival ceremony for U.S. President Donald Trump at the Royal Court in Riyadh, Saudi Arabia May 20, 2017. Photo: REUTERS