The US Army Is Trying to Bury the Lessons of the Iraq War

I think "ignore" is more accurate than "bury." It's about opportunity cost. The mentality, right or wrong, is that a war like Iraq can cost billions of dollars and thousands of lives, but while we were focused on that, we were ignoring threats that could literally end us, which counter-insurgencies halfway around the word cannot.

We failed to realize that reaching Baghdad was not the culmination of operations. We were also ignorant of giving the Shia the power over the Sunni.