This week on Babel, Jon speaks with Helen Lackner, the author of the new book, Yemen: Poverty and Conflict, who has spent five decades covering Yemen. They talk about how conflict has been endemic in Yemen for hundreds of years, how the current conflict fits into that history, and what a post-conflict Yemen could look like. Then, Jon continues the conversation with Natasha Hall and Caleb Harper about U.S. goals in Yemen and other conflict-affected countries in the Middle East.