The Spanish translation of my What is Genocide? is now out from Prometeo Libros, Buenos Aires. Many thanks to Victoria Cacares Mauri, the translator, and to Daniel Feierstein, editor of the Colección Estudios sobre Genocidio, in which the book appears.
¿Qué es el Genocidio? is based on the original English text published in 2007. I have now completed a Second Edition, to be published by Polity later this year. I haven’t changed my answer to the question, but the new edition addresses the expanded literature, especially on Raphael Lemkin, the inventor of the idea of genocide, which has appeared in the last decade, as well as improving the presentation of the argument.
Martin Shaw 
From: Alan Jacobs H-Genocide, Editor ajacobs@mail.h-net.msu.edu