Keep reading.
I had the same recollection. Turns out that while yes, the was beheaded in Pakistan, he was investigating islamist funding with smuggled tanzanite. Tanzanite only comes from Tanzania (hence the name) and guess who controls the tanzanite mines and trade.
Yup, Barak's very own tribe, the Luo...
And here's Barry campaigning for the leader of the Luo tribe, (second) cousin Raila Odinga, out there in Kenya.
Charming.