The two Koreas appear to be coming closer to an armed clash along their poorly marked military dividing line after a series of increasingly hostile warnings from the North, observers say. Back-to-back statements on Wednesday and Thursday by Kim Yo-jong, the powerful sister of North Korean leader Kim Jong-un, appear aimed at building a case for blaming Seoul for any future exchange of fire, they say. “The two sides appear to be edging closer to accidental armed clashes,” said Oh Gyeong-seob, a...