The NIS published photos to its website purportedly showing Russian operations clandestinely moving the troops via boat. The officials claimed a total of seven Russian military ships had been observed ferrying personnel and ammunition from North Korea to the port city of Vladivostok, Russia, between Oct. 8 and Oct. 13.

North Korean leader Kim Jong Un reminded his troops to treat South Korea as a hostile foreign enemy and insisted that the North wouldn’t hesitate to attack its rival if the South infringes upon its sovereignty,

North Korea said its army units are prepared to launch strikes against South Korea if another drone carrying propaganda flyers flies into the country.