South Korean National Security Adviser Kim Kwan-jin (R) shakes hands with Hwang Pyong-so, the top military aide to the North's leader Kim Jong Un, after the inter-Korean high-level talks at the truce village of Panmunjom inside the Demilitarized Zone separating the two Koreas Aug 25. North and South Korea reached agreement early to end a standoff involving an exchange of artillery fire that had pushed the divided peninsula into a state of heightened military tension.