By Stuart Leavenworth
As evidence piles up about North Korea’s nuclear capabilities, some of US President Donald Trump’s supporters and outside advisers are urging him to launch a preemptive strike on Kim Jong un’s weapons facilities or the missiles being prepared for launch.
But there’s at least one significant reason why US military leaders would be reluctant to carry out such a strike: North Korea would surely retaliate, and this retaliation could include use of chemical weapons.
The casualties would be unimaginable. Some 23 million people live in the region of Seoul, with parts of the city sitting a mere 35 miles from the North Korean border. Also at risk would be some 150,000 US citizens who live in South Korea, including 29,000 troops stationed there.
“Nuclear weapons are not the only threat,” said Kelsey Davenport, director of non—proliferation policy for the Arms Control Association. “North Korea could respond to a US attack using chemical weapons. That would be devastating.”
North Korea is known to have compiled large stockpiles of nerve agents such as sarin and VX. It could fire these from hidden artillery and missile sites, targeting US military bases in the region and cities such as Seoul and Tokyo.
North Korea started developing chemical weapons in 1961, when the father of the country, Kim il sung, issued his “Declaration of Chemicalization” amid rising tensions at that time. North Korea officially denies that it possesses chemical weapons, but according to the Korea Research Institute of Chemical Technology, the country has four military bases equipped with chemical weapons and 11 facilities where such weapons are produced and stored.
A separate analysis in 2011 concluded that North Korea had 2,500 to 5,000 tons of these weapons.
While a surprise US strike might be able to eliminate some of these stockpiles, North Korea’s artillery guns are thought to be preloaded with chemical weapons, allowing them to be deployed instantly. Hundreds of these guns are within range of Seoul, or at least parts of the city, many of them buried in mountainsides. “It would be difficult, if not impossible, to neutralise this artillery in any preventative strike,” Davenport said.
A recent report by Reid Kirby, a military analyst, details the challenges the US—South Korean alliance faces with North Korea’s stockpiles of chemical weapons.
“Compared to the nuclear threat, which involves a finite number of warheads and delivery systems vulnerable to air defences and antimissile systems, the chemical threat is not as easily negated,” wrote Kirby in the Bulletin of the Atomic Scientists.
Some analysts say that North Korea has purposely exaggerated its chemical weapons capability, part of a strategy to deter a foreign attack. Chemical weapons decay over time and Joo Seong Ha, a defector from North Korea and a journalist based in Seoul, said the north does not have an effective system for maintaining and replenishing its supplies of agents such as sarin and VX.
Other analysts disagree. Daniel Pinkston, a North Korea military specialist at Troy University in Seoul, said that Pyongyang’s military leaders have demonstrated they can develop and maintain sophisticated weaponry.
“The most important thing for them is to have the human capacity to produce this material, store it and deploy it,” said Pinkston. “It is clear they have this capacity.”
VX and sarin are both potent nerve agents, which act on the nervous system of an organism, preventing muscles from functioning. Both are banned by the Chemical Weapons Convention, but several countries maintain stockpiles.
Pinkston notes that North Korea most recently used VX in the February assassination of Kim Jong nam, the outcast half—brother of Kim Jong un, at Kuala Lumpur’s airport. According to Kirby, that attack”was undoubtedly a reminder to North Korea’s enemies of the chemical threat that Pyongyang poses.”
For decades, the city of Seoul has maintained a civil defence plan to prepare residents for an attack from the north. More than 3,300 civil defence evacuation centres are spread across the city, along with 17,500 protective shelters. Both the United States and South Korea have developed smart phone apps for their citizens to aid in an evacuation.
Even so, a bombardment of Seoul with conventional artillery would possibly kill tens of thousands of civilians, with numbers higher if chemical weapons were used. “Civilians would suffer much greater casualties than the military, which have protective gear,” said Pinkston.
Every year, the United States and South Korea hold a joint military exercise to prepare for a possible conflict with North Korea. This exercise generally include troops donning protective gear to simulate conditions during a chemical attack.
David S. Maxwell, a retired US Army special forces colonel, recalls donning that protective gear during summer months while he was stationed in South Korea.
“It is brutal. It degrades your capability,” said Maxwell, a Korea specialist at Georgetown University. “The simplest thing – staying hydrated and drinking water through a protective mask – is very difficult.”
Maxwell says he has little doubt about North Korea’s willingness to use weapons of mass destruction.
“It would use chemical weapons on the first day,” he said. One likely target would be US and South Korean air bases, to disrupt allied air power. “Korean and US forces train for this,” he said. “They train to decontaminate runways and aircraft, so they can continue to launch aircraft and rearm them.”
For the same reason, North Korea might also use chemical weapons on ports and navy bases in South Korea, to prevent re—supply of forces during a conflict.
“The north would want to degrade the logistics chain of delivery in the south,” Pinkston said. “Chemical weapons could be one tool to do that. It would also have some shock value that might prevent other countries from entering the conflict on the south’s behalf.”
(This report was financed in part through a travel fellowship provided by the East—West Center, the Korea Press Foundation and the Pacific Century Institute.) —MCT
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