The United States’ use of military force to remove Venezuelan President Nicolás Maduro marks a turning point for Venezuela and for U.S. policy in the Western Hemisphere. But it would be a mistake to ...

A former adult film star who beheaded and killed her ex-husband will serve at least 28 years in prison, a Las Vegas judge ...

Stochastic volatility is the unpredictable nature of asset price volatility over time. It's a flexible alternative to the Black Scholes' constant volatility assumption.