The discussion between the pope and Donald Tusk focused on "the Christian moral and religious values, which are part of Poland's patrimony," the Vatican said.
The statement also said the two discussed "traditionally good relations between Poland and the Holy See, which received a special impulse during the pontificate" of Polish-born Pope John Paul II.
Tusk, who won the elections on Oct. 21, also met with the Vatican's secretary of state, Cardinal Tarcisio Bertone, and its foreign minister, Archbishop Dominique Mamberti.
The premier also placed flowers on John Paul's tomb in the Vatican grottos.
The face of USA's First Lady Melania Trump after her handshake with Russian President Putin has received a lot of attention in social media
Moscow is trying to stop Balkan countries from entering NATO. Greece eventually took measures against Russia, even though Greek Prime Minister Alexis Tsipras had earlier said that Russia was Greece's strategic partner
The Ukrainian government refuses to abode by its obligations, rejects a peaceful resolution of the conflict, and disregards its own people, the president said