Who is the ultimate authority that manages what is redlisted? Since Bitcoin is a consensus network if everyone isn't using the same redlist it will lead to many forks.
That is decided by the majority. Every miner can select what to redlist.
This is thus a very generic mechanism, where countries could issue redlists and miners can opt to follow them (or not).
If there is no consensus the majority simply wins. Forks are short lived, limited by the Switching threshold.
This proposed mechanism is designed to give up if it sees that it is creating a fork after, for instance, 3 rounds.
This has gotten some initial press coverage, with more details:
http://www.wired.co.uk/news/archive/2014-06/25/regulating-bitcoin