I thought for a moment they weren't going to get to this! Part of the problem is the greater range of the rockets supplied to Hezbollah by the Iranians and the greater standoff capability they bring. That alone constituted a deliberate escalation on the part of Iran. But for Israel to penetrate all the way to the Bekaa valley is no small undertaking. They would benefit from U.S. help in that regard and Iran will be doing all it can to prevent that, up to and including demonstrations within Iraqi territory to the east.
This is, in a broad sense, a manifestation of the struggle between Iranian and Saudi puppet-masters within the overall movement that is radical Islam. Which of them damages Israel the most is a matter of high prestige...as long as they don't lose. Count on Iran to throw everything it thinks it can risk into this.
Proxy war with Iran...
Israel and the west have been caught up in the Sunni vs Shiite "Who can be more islamic" pissing match for a long time now.
Its creating all kinds of misery and destruction all over the world.