Scholastic announced Thursday that Suzanne Collins ‘ new novel in the bestselling Hunger Games series, Sunrise on the Reaping , sold more than 1.5 million world English copies—including print, e-books, and audiobooks—in its first week on sale in the U.S., U.K., Ireland, Canada, Australia and New Zealand.

Suzanne Collins originally wrote the Hunger Games books because she wanted to explore just war theory. “Just war theory has evolved over thousands of years in an attempt to define what circumstances give you the moral right to wage war and what is acceptable behavior within that war and its aftermath,