It is without exaggeration that I say that since WWII, there is not a single civil war, anywhere around the world, in which the US was not involved in some capacity. In this civil war, the US/Israel is a major player: "The United States is considering expanding assistance beyond Palestinian President Mahmoud Abbas's Presidential Guard to members of the largest
force under his command, Western and Palestinian officials said. Providing U.S. funds to train elements of Abbas's National Security Forces (NSF), in addition to the Presidential Guard, could increase U.S. involvement in the violent power struggle between Abbas's Fatah faction and the governing Hamas movement."