JERUSALEM — Israel has been preparing for its next war against Hezbollah for nearly a decade, and a full-scale conflict has seemed increasingly inevitable with each passing month since Oct. 7. Now, with Hamas diminished in Gaza, Israel is putting its battle plan in motion.

The fight against Hamas has strained the Israeli military, with soldiers receiving little respite, officials citing army shortages, the economy facing its steepest decline in years, and growing public pressure for a ceasefire and a hostage deal.

A barrage of Israeli strikes since Monday has killed at least 558 people in Lebanon, and raised fears of a devastating all-out war.