BEIRUT — Israeli troops have captured a strategic mountain topped with a Crusader-built castle in southern Lebanon in the deepest incursion of the country in 26 years, the military said on Sunday.

Israel has captured the 12th-century Beaufort castle that overlooks southern Lebanon and northern Israel. The move suggests Israel is planning an extended military presence in…

The capture of the castle marks a major gain for Israel since the latest Israel-Hezbollah war began in early March.