The U.S. Treasury Department has announced detailed rules concerning the implementation of U.S. sanctions on North Korea.

The Treasury listed additional regulations relating to the implementation of sanctions placed on the North in June 2009 for weapons testing and in August of this year in response to North Korea's sinking of a South Korean warship.

The rules stipulate the definition and interpretation of terminology and procedures for implementing the sanctions by U.S. government agencies and financial institutes.

At present, there are two sets of sanctions effectuated by administrative orders in the U.S. that specifically target North Korea.

The sanctions have frozen assets of certain North Korean organizations and individuals and they also ban U.S. transactions with the designated entities.