Iran has been severely weakened by US-Israeli assaults. Israel now sees a historic alternative to destroy the Iran-loyal Hezbollah militia in Lebanon. It desires to realize this objective with a large-scale assault on 4 ranges.
https://www.welt.de/politik/ausland/plus69ad44fec60fd6c407749fba/libanon-vierfach-angriff-wie-israel-die-hisbollah-fuer-immer-eliminieren-will.html