Speaking recently from war-torn Cameroon, Pope Leo XIV’s remarks were clearly intended for an audience more significant than those in attendance.

“The world is being ravaged by a handful of tyrants,” he said. “The masters of war pretend not to know that it takes only a moment to destroy, yet often a lifetime is not enough to rebuild.”

The pontiff's remarks were the latest volley in a high-profile war of words between the leader of the world’s 1.4 billion Catholics and President Donald Trump, home to over 342 million people.

The rift appeared to start when Trump threatened that “a whole civilization will die” if Iran did not make a deal to reopen the Strait of Hormuz shipping lane, a statement Leo said was “truly unacceptable.” 

Trump responded by saying the pontiff was weak on crime, weak on nuclear weapons, and should “focus on being a great pope, not a politician.” 

The U.S.-born Leo retorted while en route to Africa that he had “no fear of the Trump administration.”

The recent exchanges are not the first time Trump has gone back and forth with the pontiff. 

While running for president in 2016, he called Leo’s predecessor, Pope Francis, “disgraceful” for questioning his religious faith, considering Trump campaigned, in large part, on building a wall between the U.S. and Mexico.

Still, the exchanges – which have unfolded across pulpits, press gaggles and Truth Social posts – are just modern twists on one of history’s oldest rivalries. For centuries, popes have stepped into the political arena to challenge kings, emperors, and other leaders over questions of moral authority — with mixed results.

The range from the Cold War-era standoffs between Pope John Paul II and the communist regimes of Eastern Europe in the 1980s to Napoleon’s clash with Pope Pius VII more than 200 years ago. 

They also include the uneasy relationship between Pope Pius XII and Fascist leaders Adolph Hitler and Benito Mussolini during World War II and British King Henry VII’s historic break with the Vatican and Pope Clement VII in the 1500s. 

“There are countless cases of popes stepping outside their roles as spiritual leaders,” retired Church historian Alistair Sear told Just the News. “The church first took form against the will of the Roman emperors and that continues to this day.”

Others argue the Pope, as a moral authority, is speaking and acting from within his role. 

"When the pope speaks, it's not that he's taking sides. He's really pointing out the objective moral law," Michele Dillon, a professor of sociology at the University of New Hampshire whose research focuses on the Catholic Church, recently told National Public Radio.

Along with Ronald Reagan as U.S. president, Polish-born John Paul II is seen as a central figure in hastening the collapse of the Soviet Union, which began with a popular labor movement in the pontiff’s home country. 

Historians still debate whether Pius XII did all he could to prevent the Holocaust and stand up to the power of Hitler and Mussolini.

Napoleon had Pius VII arrested in 1809 to reduce the Vatican’s influence so that Napoleon could be declared emperor over the pontiff’s objections. 

And the split between Henry VIII and Clement VII fractured Western Christianity, creating the Church of England that today has 100 million adherents globally — a rift that is only beginning to soften. 

“The main difference between what is happening now and important historical times when the pope and world leaders clashed is that today's news travels in an instant,” Sear said. “It was much different when Henry VIII and Pope Clement exchanged missives that had to be carried across Europe by horseback.”