They can do anything they wish. Their problem not Israel's. if they are so enamoured with Hassan's take over of Lebanon who's to stop them. Live and let live...with a big difference NO FURTHER ATTACKS ON ISRAEL PERIOD. And if not,then the consequences are justifyable.No occupation,but defensive actions ..is admissible don't you think?
Yemen's Houthi rebels commit to peace plan in letter to UN chief, BBC reports (Haaretz)
from the article: U.S.: Iran's actions compromise Lebanon's sovereignty