Hamas launched a surprise invasion of Israel from the south. Hezbollah is a much more formidable fighting force located north of Israel in Lebanon and could inflict substantial damage on Israel.
I very much agree that Hezbollah is the key. They are doubtless in touch w/ Tehran, and both may have been surprised by Hamas forcing the issue. As you say tho, good timing. It's going to be an interesting few weeks.
How did you get this out so quickly!?