There's a lot of practical information to be obtained, though. What the elder brother was doing out of the country for 6 months, through what channels he became

There's a lot of practical information to be obtained, though. What the elder brother was doing out of the country for 6 months, through what channels he became radicalized, whether they were co-conspirators or the younger was just along for the ride, did they act alone or were they funded/goaded on by extremest groups, etc.