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South Korea's unification ministry on Thursday called on North Korea to immediately stop border escalation acts and return to dialogue, after Pyongyang threatened to resume loudspeaker broadcasts directed at the South. The ministry warned that such broadcasts would increase the risk of accidental clashes, and said Seoul would take a "proportionate measure" if the North goes ahead, without detailing what that would be. The main opposition People Power Party separately renewed calls for the government to resume its own loudspeaker broadcasts in protest over recent mine blasts in the Demilitarized Zone. Yonhap reports the ministry urged the North to "stop border escalation acts" and resolve the issue through talks.