Julius Caesar and his formidable Roman army crossed the Rubicon River in 49 B.C. It was a momentous thing to do. Even today, people describe an important decision or event as “crossing the Rubicon,” ...

Bogdan Belei is an intern in the Center for Preventive Action at the Council on Foreign Relations. On his way to Rome in 49 BCE, Julius Caesar paused before crossing the Rubicon. With only a single ...

President Trump signs an executive order. (Image from White House video) Commentators love to compare Donald Trump’s norm-breaking ways to Julius Caesar’s momentous decision to “cross the Rubicon” in ...