The letter extended warm congratulations to the Korean people on their successful third nuclear test.

Through the nuclear test, the DPRK showed the world that it is a powerful country which never yields to other's pressure, the letter said, and went on:

We fully support the DPRK's legitimate exercise of its sovereignty.

Now is the time for the people of the U.S. to pressurize the government to make a switchover in its policy towards the DPRK, put a definite end to the Korean War and contribute to ensuring peace of the Korean Peninsula.