“U.S. involvement” in any foreign context post-1945 rarely turns out well.
True, although in this case it did (at least better than the alternative.)
The CIA helped the good guys but I doubt the commies had any real chance of winning even without it.
Probably also true, but can't blame them for not taking any chances. Remember that this is before polling was widespread and probably wasn't even a thing in Italy and they lacked all the other things we use today to track elections. It was the same year as Dewey Defeats Truman after all.