TIBNIN CASTLE, Southern Lebanon — The walls of a limestone citadel towering over olive groves near the frontiers of Lebanon, Syria and Israel tell the history of various civilizations that ruled here.

Hezbollah is a Shiite Muslim political party and militant group based in Lebanon, where its extensive security apparatus, political organization, and social services network have fostered its ...

Lebanon, one of the most troubled countries in the Middle East, is once again at a critical crossroads. Several recent developments—a new leadership, a cessation of the Israel-Hezbollah conflict, and ...