Why did 'murica invade Afghanistan again? Oh, right, the hunt for bin Laden, that asshole that was among the many taliban trained by the CIA during the 80s. The objective was one man, yet the whole country became a puppet state and remained one for 10 years after the target was killed.
There's also Iraq, another shining beacon of stability thanks to 'murican freedum 'n democracee. Oh, and Lybia! Super democratic place nowadays.
I might do the same thing if someone spent 20 years tearing apart my home and then just packed up and left without paying me back for it just so the local religious fascists could move in.
The UN is a toothless poodle. The current Israeli-Palestinian conflict has been the first time in my life that I've seen the USA actually tell Israel to maybe kinda not be so aggressive. A quick internet search also showed that USA, France and UK vetoed a resolution that denounced the USA invasion of Panama in 1989