I teach History of International Relations since 1648 to undergraduate students at the Department of Political Science and ...

In the 1950s, the US began test-flying a new spy plane, the Lockheed U-2. A Sky HISTORY series explores how this led to UFO ...

The Thirty Years War, a series of wars fought by various European nations for various reasons, ignited in 1618 over an attempt by the king ... As a result of the Treaty of Westphalia, the Holy Roman ...

Pope Leo I helped to ensure that Catholicism would outlast the Roman Empire. His name is a reminder that our faith rises ...

Pope Leo XIV has declared himself a Roman as he completes the final ceremonial steps cementing his role as the bishop of Rome ...

Pope Leo XIV has declared himself a Roman as he completes the final ceremonial steps cementing his role as the bishop of Rome ...

Thanks to modern-day literature and films—and the fact that ancient amphitheaters remain standing throughout the former Roman Empire, notably the Colosseum in Rome—warring gladiators are one ...

Pope Leo III crowned Charlemagne as the first Holy Roman Emperor ... these heretics and communicated with bishops across the Roman Empire to emphasize unity. He also oversaw the ecumenical ...

Norah O'Donnell is CBS News' senior correspondent and a 60 Minutes contributing correspondent. O'Donnell is also the host of CBS News 24/7's "Person to Person," where she brings interviews that go ...

COMMENTARY: The first ecumenical council made a landmark profession of Christ’s divine identity that continues to anchor the ...