Sadly, ever since Lebanon self destructed in its own civil war, the USA has not done much to stabilize Lebanon. While Regan initially helped, it just took one big bombing of the Marine barracks to chase the USA away. Next lucky man was Israel whose neglect helped create Hezbollah while it was in Israel's interests to keep Lebanon as a basket case. Next lucky man was Syria, but when the PR against the assassination of Herri descended on Syria, the Syrian role in stabilizing Lebanon became instantly untenable even though more progress in stabilizing Lebanon was made by Syria when compared to Israel.
And when it was decided to try to let Lebanon make it on its own, Hezzbollah, with its Iranian ties decided to use Southern Lebanon as a base to peg rockets from. The following Israeli bombing of Lebanon mostly aided the popularity of Hezbollah, while restraining Hezbollah's will to use rockets.
So Lebanon today is left weak by design, as long as Syria does not gain influence, the US and Israel are happy, but it still leaves Lebanon a wild card joker floating mine, sooner or later something will blunder into it, and things will explode all over the mid-east.
Meanwhile, rather than reduce that danger, the strategy is to hope to kick that can as far down the road as possible.