This advertisement was an open letter addressed to Obama.

It said the U.S. hostile policy toward the DPRK and Park Geun Hye regime's military pressure upon it are increasing the possibility of a war on the Korean peninsula.

What is the most important for the U.S. to improve the relations with the north is to replace the Armistice Agreement with a peace agreement, it noted, and went on:

The north has defended the socialist system despite the U.S. political and military pressure and economic isolation for a long period.