And Obama 's predecessor , George W. Bush , used binoculars to peer into North Korea from a sandbagged bunker on the southern side of the border in 2002 . The South is running a `` smear campaign '' against its neighbor - North Korean state media . U.S. is preparing to host a high-profile nuclear security summit . U.S. President Barack Obama will be among two heads of state at the meeting . He will visit the demilitarized zone between the Korean Peninsula and U.S. for two years to the day .
The South is running a `` smear campaign '' against its neighbor - North Korean state media . U.S. is preparing to host a high-profile nuclear security summit . U.S. President Barack Obama will be among two heads of state at the meeting . He will visit the demilitarized zone between the Korean Peninsula and U.S. for two years to the day .