Some observers mention the NSA spy scandal as a reason for ICANN to want to pull out of a contract with the US.
Update: March 18
The Wall Street Journal gives its account, by Gautham Nagesh, "ICANN 101: Who will govern the Internet" and warns that Vladimir Putin will try to the US surrenders it, link here. The article says that domain names have to be renewed every three years, but mine runs to 2021.
Silicon Beat weighs in here.