Voices of Jihad Database is a compilation of speeches, interviews, statements, and publications of jihadist leaders, foot soldiers, and sympathizers. Nearly all content is in English translation, and has been collected from publicly-accessible websites. Original links are provided, along with excerpts and full-text content when available.
The RAND Corporation is a venerable "think tank" that has been focused on national security problems for roughly 60 years. It began studying terrorism after the murder of Israeli Olympic athletes in Munich back in 1972. Its online Research Area in Terrorism and Homeland Security is content-rich, offering news, commentary and analysis, research reports and more.