Pope Francis in his Christmas message called for talks between Ukraine and Russia to end the war that followed Moscow's full-scale invasion two years ago.

The pope also voiced concern about the humanitarian crisis in Gaza in his Christmas address, labeling the situation "extremely grave."

He made the remarks a day after the start of the Roman Catholic Church’s Holy Year, known as a Jubilee, which takes place every quarter century. On Tuesday evening, Francis opened the Holy Door in St. Peter’s Basilica so that the first pilgrims could go through. Millions more are expected to follow over the year.

Pope Francis in his traditional Christmas message on Wednesday urged “all people of all nations” to find courage during this Holy Year “to silence the sounds of arms and overcome divisions” plaguing the world,