Not having had a nuclear exchange during the Cold War remains one of history’s more under-heralded triumphs of the successful management of great power rivalry. That was because, in those decades fraught with tensions, the United States and Soviet Union were able to arrive at a secure degree of certitude about each other’s strategic intentions and military capacities.
As that conflict matured, constant, direct contact between leaders at the highest levels and sufficient transparency — through arms control negotiations that reliably tallied the number of nuclear warheads and their launching platforms verified by surveillance — enabled the adversaries to establish a rough balance of power that deterred war on purpose or through misapprehension.
Today, as hostility between China and the U.S. has reached a Cold War temperature, no such comfortable certitude about intentions and capacities exists. Far from urgently meeting to fathom each other’s strategic perspective, leaders of the two nations so far are barely on speaking terms when not hurling insults across the Pacific. With the unprecedented weaponization of AI and cyber capabilities thrown into the military mix, a new opacity shrouds any firm accounting of capacities. With each side only guessing at motives and what a balance of power might actually look like, the logic of national security dictates a rapid buildup of wired arms so as not to be vulnerable, or to prevail, in any worst-case scenario in the event of open conflict.