Pope Leo XIV greets the faithful at the conclusion of the Easter Vigil Mass at Saint Peters Basilica in Rome. (Credit Image: © Marek Ladzinski/ZUMA Press Wire)

Leo, who is known for choosing his words carefully, has emerged as an outspoken critic of the U.S.-Israeli war on Iran that began on February 28.

The pope said this month’s threat from Trump to destroy Iranian civilization was “unacceptable.” He has also called for “deep reflection” about the way migrants are being treated in the U.S. under the Trump administration.