In September 2018, at a summit with Moon in Pyongyang, Kim agreed to dismantle North Korea's nuclear weapons facilities if the United States took reciprocal action. The two governments also announced that they would establish buffer zones on their borders to prevent clashes. On 1 November, buffer zones were established across the DMZ to help ensure the end of hostility on land, sea and air. The buffer zones stretched from the north of Deokjeok Island to the south of Cho Island in the West Sea and the north of Sokcho city and south of Tongchon County in the East (Yellow) Sea. In addition, no fly zones were established along the DMZ.