That said, perhaps there's validity in the following quote, which is featured on this site:
“Frederick the Great’s horse was on seven separate campaigns with him. In the end he was still a dumb horse.”
– Unknown (on experience in military decision-making)
Experience is great, but experiences from 20-ish years ago may not be applicable today just as they weren't for the French and British in 1940. The UN had a rough go in the 1990s especially, but some/much of that can be viewed as an inability to adapt to the changing situation on the ground after the fall of the USSR. Part of this failure was the deployment of armies designed to fight the Soviets into complex civil wars with roots going back thousands of years and a maintenance of the "split the two sides" mentality in a non-permissive environment.
That's why I choose to remain cautiously optimistic about a mission. The recent actions of the Liberals in parliament and their seeming to not have known that Pearsonian peacekeeping was over (if it ever really began) certainly don't give me warm and fuzzies, but I'm not going to trash a mission before there are any details based on experiences from the early to mid 1990's. It's akin to the French building the Maginot Line because of their experiences in WW1 only to find out that the situation had changed.