JAKARTA — Ansyaad Mbai, the director of Indonesia’s National Counterterrorism Agency, has a genealogy of terrorism spread across his office wall. It starts in 1949, the year Dutch colonizers acknowledged Indonesia’s independence, and extends to 2011. Like a family tree, it begins with one line and gradually branches out into an increasingly complex web with names and photos of the country’s most notorious terrorists.

“It’s like a database, the framework to coordinate intelligence,” he said.