" Since Lebanon is technically a sovereign nation, they are responsible for these acts, and must suffer the consequences."
[again, devils advocate - bite if you want].
So how come you aint bombing the crap out of the UK home of Richard Reid the shoe bomber?
I'll bite.
'Cause, if the UK knew about him, they'd have arrested him. After we arrested him, the UK assisted in the investigation. They didn't hide him, or allow him to hide, or try to conceal evidence. They didn't arm him or allow him to openly bear arms. Can't say that about Lebanon, can you?