Both articles are filled with examples of Iranian and Palestinian militias undermining Lebanon's governmental sovereignty and military authority, weakening the economy, actively killing Lebanese people to broaden their territorial control, and staging attacks from Lebanese soil that caused large and deadly conflicts with Israel. There is an entire section of the second link titled "Civil War," detailing how Palestinian militias caused it. I actually did start to copy-paste in here, and then when it hit a 6 paragraph text wall I stopped, it was going to wind up copy-pasting about 3/4ths of the first one and more than half of the second.
You recently posted the Wikipedia page about ALL OF LEBANON - everything! Parliament, language, economy, food, mountains and rivers - and thought that was a worthwhile use of a source, like you expected people to read it for the sake of one post in one thread. What you are now presented with are two specific articles all about Iranian and Palestinian militias using force to control Lebanese territory, society, and life, and the terrible destruction that has all caused. Try reading them again.