The Walls in Our Heads
https://www.nytimes.com/2016/11/06/opinion/sunday/the-walls-in-our-heads.html
This is a 2016 New York Times opinion piece that provides a slightly updated perspective on many of the same subjects as Wendy Brown in Walled States, Waning Sovereignty (and references her ideas as well).
Wendy Brown, On her book Walled States, Waning Sovereignty
http://rorotoko.com/interview/20110915_brown_wendy_on_walled_states_waning_sovereignty/?page=1
Brown provides context for the book, in terms of what it's about, the bigger picture, and her purpose for writing it.