The coordinated drone strikes on key Saudi Arabian oil facilities have raised questions on whether South Korea is prepared to defend itself from similar attacks.
If each drone carried some three to four kilograms of explosives, their combined damage on a target would be equivalent to a blast from 48 C-4 bombs detonated together.
A South Korean military source confirmed that the Capital Defence Command has already imported from Israel anti-drone systems.
Called the "Security Sky Radar" they're being used to defend key government and military sites in Seoul through the detection of radio signals sent by the flying objects.
But the radar system does not cover public airspace including nuclear power plants in South Korea located outside the capital which make them easy to target if the North were to coordinate drone attacks.
And these assumptions point at a dismal and very possible reality that South Korea could face as North Korean drones have flown into the country before.
Many times they go undetected especially since the unmanned aerial vehicles' wings are shorter than three meters. Moreover, advanced drones feature fixed wings instead of rotary ones, making it difficult to detect with the current radar systems.
In August, a drone believed to be from the North was spotted near the Kori nuclear power plant in Busan.
In 2014, crashed drones believed to be from the North were found on the island of Baengnyeong-do and Paju city.
Another one was caught in 2017 near the military base of Seongju trying to take photos of the THAAD U.S. anti-missile system.
Kim Ji-yeon, Arirang News.