The interview with the brother was strange, guy seems like a regular joe, typical American... Couldn't be any more dull... What the fuck, I wish they pushed him on questions of this guy's political and social views! Surely something triggered him...
I would've interrogated the brother a little more within "reason"...
"Massive Gambling debt?"
"Trouble with his girlfriend? relationship, financial problems with her? Any idea why she isn't in the country? and how long has she been gone? They are a couple right, was there lots of arguing? A bumpy relationship?"
"Did he like his country?"
"Watched the news a lot?"
"Did he do any volunteer work, was he socially involved in the community?"