The cynical side of me just wonders if this will be used by the ROK government as an excuse to keep North Korean defectors out of South Korea:

South Korea said Thursday it will ban the entry of North Korean officials who fall under a U.N. travel restriction — Seoul’s first concrete move to enforce sanctions imposed after the North’s nuclear test.

Unification Minister Lee Jong-seok also said Seoul will control transactions and remittances relating to inter-Korean trade and investment with the North Korean officials, Yonhap news agency reported.

A U.N. committee on the sanctions, passed in response to North Korea’s Oct. 9 nuclear test, has been working to outline how they will be implemented.

So who exactly are they keeping out?