Book excerpt: An updated edition of a timely resource In this revealing book, author William Wagner examines the continuing, rapid worldwide growth of Islam. Crediting Islam's growth to a well-financed missions strategy, Wagner analyzes three tactical methods: jihad (holy war), D'wah (missions), and mosques (presence). Now updated with new information and statistics, this timely book provides insight into a seldom-discussed area of Islamic culture and equips believers to answer the claims of a more strident Islamic apologetics.