The original situation in Korea was very much like the one in Kuwait: a dictum from the UN to go ONLY to defend South Korea. But as soon Mac landed at Inchon then Truman decided to invade North Korea. It was done even then considering that... "There were no military plans to do so. No lines on a map with phase lines, no supply organization, nothing..." Plans change and have changed in ALL wars. In this case there is evidence that some military commanders thought, as was plain obvious to even a schoolchild, that leaving Saddam alive will be an issue (that was 100% correct and which is why the US invaded, again, in 2003). Is like trying to liberate France from the nazis in 1944 but not invade Germany afterwards.
The articles from Time and Newsweek are there, written at the moment. And Powel's conduct is not alien, it was the way he is always been.
An appeaser is one who feeds a crocodile, hoping it will eat him last.
Sir Winston Churchill