War reporting is a difficult and dangerous game, and that's the case when those wars are declared and fought out in the open. Then there are the undeclared wars in countries like Pakistan, Yemen, and Somalia fought through drone strikes and black ops teams -- covert military operations that officials barely even acknowledge. Those are the kinds of wars that Jeremy Scahill covers. Scahill made his name in 2007 with a book on Blackwater, the US military contractor that was paid big money by...