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On Thursday, South Korea's unification ministry called on North Korea to stop acts that could raise the risk of clashes along the border, after Pyongyang threatened to resume loudspeaker broadcasts, Yonhap reports. The government warned of "proportional measures" if the North restarts the broadcasts and urged a return to dialogue, according to KBS World. Kim Yo-jong, the North Korean leader's sister, warned of "new counter means" and said propaganda loudspeakers would be ready within days, Yonhap and Korea Times report. The main opposition People Power Party also renewed calls for Seoul to resume its own loudspeaker broadcasts in response to recent mine blasts in the Demilitarized Zone, Korea Times reports.