“Washington’s bipartisan military-first approach to foreign affairs broadcasts to bad actors worldwide that U.S. intervention is always at hand and that a nuclear arsenal is the only sure deterrence against it.
North Korea has affirmed this logic explicitly. “History proves that powerful nuclear deterrence serves as the strongest treasure sword for frustrating outsiders’ aggression,” a state-run media editorial declared in January 2016. Neither Iraq’s Saddam Hussein nor Libya’s Moammar Gadhafi, both deposed and killed with U.S. involvement, could “escape the fate of destruction after being deprived of their foundations of nuclear development and giving up undeclared programs of their own accord,” the editorial continued. North Korea’s Kim Jong-un is visibly determined not to follow in their footsteps.
For all its imperfections, the Joint Comprehensive Plan of Action (JCPOA)—better known as the “Iran deal”—presented an opportunity to break this pattern. Unfortunately, that opportunity is gone following Trump’s withdrawal from the agreement in 2018. After the Soleimani strike, Tehran announced its own exit from the plan and, with that, its intent to proceed with nuclear research and development at will.”
https://reason.com/2020/01/10/escalation-breeds-escalation-in-iran-and-beyond