The journey of two sisters into the Syrian jihad, and a father's efforts to rescue them

Somali-Norwegian teenagers Ayan and her younger sister Leila leave their affluent neighborhood outside of Oslo to travel to Syria and marry ISIS fighters. Author Asne Seierstad's latest book, "Two Sisters: A Father, His Daughters and Their Journey into the Syrian Jihad", shares the family's story including the father's efforts to bring his daughters home.