Iraq wasn't even in the same ballpark as Somalia. Afghanistan is under NATO, not UN, although that's not terribly relevant here.
Hmmm, if you don't mind me saying so Wrath, that's a bit of a lawyer's answer. It matters not what the mission is sold as, the brains should be saying... "look we are gonna be doing a lot of fighting in failed states. Our light armour solutions are sub-optimal because peace-keeping RoEs forbid us sending in an armoured cavalry regiment. So we need up-armoured light vehicles."
This isn't armchair general stuff, serving friends agree with my basic argument and the UK has made the same mistakes.
No, no one was saying that after Somalia. Before mission creep, it started out as a humanitarian mission. After, everyone was saying "never again". It took 9/11 to change everyone's mind, and only if it was clear our vital interests were at stake. And if peacekeeping ROEs forbid armored cav, we shouldn't be in that mission in the first place.
Well, that's as good explanation as any, except perhaps not everyone in the military was the tactical genius to see that writing in the 1990s.