The 84-year-old is defying a second wave of the global pandemic and renewed security fears to make a "long-awaited" trip to comfort one of the world's oldest Christian communities, while also deepening his dialogue with Muslims.
"May there be an end to acts of violence and extremism, factions and intolerance!" urged Francis in the stirring address, his first after arriving in Iraq.
Francis landed in the afternoon at Baghdad's International Airport, where he was greeted by Prime Minister Mustafa al-Kadhemi, as well as groups showcasing Iraq's diverse folklore music and dance.
He then met with President Barham Saleh -- who had extended the official invitation to the pontiff in 2019 -- as well as other government and religious figures.
At the imposing presidential palace, the head of the world's 1.3 billion Catholics gave a moving address, stressing the deep roots of Christianity in Iraq.
"The age-old presence of Christians in this land, and their contributions to the life of the nation, constitute a rich heritage that they wish to continue to place at the service of all," said Pope Francis.
He also urged Iraqi officials to "combat the scourge of corruption, misuse of power and disregard for law," in a country consistently ranked one of the most graft-tainted by Transparency International.
The Pope, a prominent promoter of interfaith dialogue, also hailed other devastated Iraqi minorities.
The trip is the pontiff's first travel abroad since the coronavirus pandemic, which had left him feeling "caged" in Vatican City -- and it has been hailed as a bold choice.