Nuclear war (n.) is, unlike climate change, a threat we have the power to abolish, and cheaply — yet its effects would be instant and beyond mitigation.
Nuclear war (n.) has been sold to presidents as limited and winnable by insulated bureaucracies that systematically underestimated its destruction.
Nuclear war (n.) has so far been avoided by a near miracle, which is a warning, not a record.
Nuclear war (n.) is the black swan we never see until it is killing us, so the time to act is while we are still alive.
Nuclear war (n.) is beyond insanity: a first strike might destroy the attacker through its own nuclear winter.
Nuclear war (n.) is the one whose weapons nobody can predict — only that the war after it would be fought with stone axes.