South Korea fires warning shots as North Korean soldiers briefly cross border

South Korean army soldiers patrol along the barbed-wire fence in Paju, South Korea, near the border with North Korea (Ahn Young-joon/AP)

South Korean soldiers fired warning shots after North Korean troops briefly violated the tense border earlier this week, South Korea’s military said on Tuesday.

The rival nations are embroiled in Cold War-style campaigns like balloon launches and propaganda broadcasts.