On 25 August 2015, top-level negotiators from the North and South Korea reached a six-point agreement in the aftermath of a period of high military tension, which began when a landmine exploded in the Demilitarized Zone on 4 August, wounding two South Korean soldiers. Accusing North Korea of an unprovoked attack, South Korea responded by resuming anti-North Korea propaganda broadcasts for the first time since 2004.