What to know

• Seoul accused North Korea of planting mines south of the military demarcation line that caused the September 21 blasts, but Pyongyang has denied responsibility for the explosions and warned of retaliation if provokedS1
• North Korea fired “around a dozen” short-range ballistic missiles off its east coast on Thursday, Seoul’s defence ministry said, less than a week after South Korea proposed talks over a growing border row. South Korea’s Joint Chiefs of Staff said its military...S2