As part of our week-long series, we speak with two immigrant writers whose parents were forced to flee their homelands because of political unrest, and came to rest in America. Both live outside the U.S. now, and both say their notion of "home" has become ... portable.

Dinaw Mengestu, who wrote "How to Read the Air" and "The Beautiful Things That Heaven Bears" tells us about his nostalgia for the childhood home he left behind in Ethiopia. Azadeh Moaveni, the author of "Honeymoon in Tehran: Two Years of Love and Danger in Iran," and a contributing writer to Time Magazine, explains how her notion of home – in Iranian literature – has evolved over time.