Why do veterans miss war? That's the question that has animated the latest work of Sebastian Junger, the best-selling author and filmmaker whose recent film, Korengal, picks up where his Academy Award-nominated war documentary Restrepo left off. The answer, he says, could have broad social implications. On this episode, Junger and Slaughter discuss those implications, and explore how both evolution and gender shape the experience of war – and peace - for men and women.