Military/ We live in the world that we live in

..."We're products of our environments. We're products of our experiences. Certainly that experience in war in Vietnam in 1968 ... the violence, the horrors, the suffering that I saw, yes, it conditioned me."

"But," Hagel added after a brief pause, "I also recognize the realities of the world that we live in. The instrument of our military is required, unfortunately, and history is rather replete on that point. Maybe someday they will not be required, but they are.

"Then the question becomes the use of that instrument of power and force. Using it wisely, using it carefully, and using it judiciously. We have not always done that and I have been very vocal on that point," he said.

 Hagel: Vietnam War's lessons still echo today