The South is running a `` smear campaign '' against its neighbor - North Korean state media . In the latest example of this kind of propaganda, Pyongyang has accused Seoul and Washington of plotting to overthrow Kim Jong Un's government. U.S. President Barack Obama will be among more than 50 heads of state at the meeting . But its message of international cooperation has been overshadowed by North Korea 's announcement last week that it is planning to carry out a rocket-powered satellite launch in April . He will visit the demilitarized zone between South and North Korea for the first time Sunday .
The South is running a `` smear campaign '' against its neighbor - North Korean state media . In the latest example of this kind of propaganda, Pyongyang has accused Seoul and Washington of plotting to overthrow Kim Jong Un's government. U.S. President Barack Obama will be among more than 50 heads of state at the meeting . He will visit the demilitarized zone between South and North Korea for the first time Sunday .