Far more serious have been the crimes against humanity perpetrated by North Korean regimes against the people of North Korea.
North Korea has possibly 10-16 crude WMDs, and only limited methods of delivery.
This is just a tiny fraction of the estimate, by the International Campaign for Abolition of Nuclear Weapons, of well over 15,000 nuclear weapons possessed by other countries, including Russia 7,500, US 7,200, France 300, China 260, Britain 216, Pakistan 130, India 120, and Israel 80.
North Korea has never used nuclear weapons in a conflict, but the US has, and the US and Britain have used depleted uranium munitions in the Balkans, Afghanistan, Iraq, Syria and elsewhere.
Five of these countries probably have the capacity to make planet Earth uninhabitable by humans and other living creatures.
The threats to world peace from these other eight countries, is far greater than that posed by North Korea. Four of these countries are bombing Syria at present.
Your editorial states that “mad men with military might have created global conflict. It could happen again”.
Only with the benefit of hindsight were Hitler and Stalin considered to have been mad.
History may well judge leaders of the other nuclear states to have been mad men. Ireland played a major role in the Nuclear Non-Proliferation Treaty signed in 1968. We have done too little in the meantime to rid the world of the madness of nuclear weapons.