I would say Rajiv got the tone pretty much right. Whether you agree with the details or the characterizations of people involved, the fact remains that there have been (and still are) widely varying views on how to approach the war in Afghanistan. That's true at the political level, with policy makers in Kabul, and on the ground where troops and civilians alike are trying to pull this all together.
He does an excellent job of showing how these conflicting approaches have worked against each other and caused unnecessary waste at every level. Clearly there has been wasted money, time and resources. More importantly, there have been many lives sacrificed along the way.
I'm here now living this war, in the region around Kandahar that he focuses much of his attention on in this book. My biggest criticism is that it wasn't published six months ago, when I was trying to make sense of Afghanistan after focusing all my attention on Iraq. This is the briefing I needed in order to understand why we are, where we are, today.
If you're going to read one book about the war, this is the book to get. If you're going to read several, and there is a long list of worthwhile titles, start with this one and then dig into the areas that interest you. I wish I could have.