MOSCOW, August 21. /TASS/. North Korea’s reaction to Seoul’s failure on meeting Pyongyang’s ultimatum, pressed in the wake of a new tension between the two neighboring countries, will be prompt and rough, Kim Hyun Joon, the ambassador of North Korea to Russia, said on Friday.

"We have issued our ultimatum, and if they [South Korea] would not get rid of all means set for waging a psychological war, then our rough and prompt reaction would be inevitable," the ambassador told a news conference on Friday.

Kim Hyun Joong explained Pyongyang’s official stance on a mine explosion that occurred in the Korean Demilitarized Zone on August 4.

The diplomat described the situation around the DPRK as explosive.

"The US and South Korean provocations made in recent days have brought the situation on the Korean peninsula to the brink of war," the North Korean diplomat said.

"A very suspicious incident - a mine explosion - took place in the western part of the demilitarized zone on August 4. The demilitarization zone along the demarcation line is a sheer minefield. That is why explosions can occur due to rains and fires. Natural disasters have recently provoked simultaneous explosions of 140 mines," Kim Hyun Joong stressed.