Former mid-east advisor to six National Security Directors made a point on the radio yesterday. Hezbollah is not the armed faction of a larger movement. It formed as an armed unit. It's entire identity is that of an armed unit. To say "disarm Hezbollah" is the same as saying "eliminate Hezbollah".
While you could argue semantics, I expect the Hezbollahi[1] would agree with the sentiment.
[1] Heard that term for the first time yesterday.