Snowden is a top scumbag. Bring him to justice. He could have just disclosed domestic spying operations. Instead, he lit a match and torched the NSA to the ground, while kicking off a global subversion movement directed primarily at the USIC. That he fled to adversaries while, for instance, disclosing USIC hacking efforts against them indicates his motives. He's anything but a patriot. He's a traitor against the United States, against the oath he took. His profits from the book should be seized.
Why does Snowden's twitter only follow @NSAGov? Are they his sole "target" forever? His entire social presence is centered around this idea of the NSA being his sole "adversary"? He torched the NSA to the ground.
Why did someone who is so calculating execute an ostensibly haphazard plan to end up overseas? Intentional or not, Snowden went to HK then Russia. He stays in Russia to avoid facing justice.
How much time did Snowden have to plan for his escape? At least since December 2012. It was enough time for him to think through and coordinate the biggest part of such a plan: the diversion. It would not be surprising to discover that he had help domestically during this process.
The forthcoming book does allow Snowden to write his own history.