Why We Still Have 12,000 Nukes

TL;DR

12,000 nuclear warheads persist because mutual assured destruction makes the cost of war between nuclear powers too catastrophic for anyone to risk.

Key Points

• 1.The world retains ~12,000 warheads, down from triple that during the Cold War. Nearly all are held by the US and Russia, spread across land, air, and submarines — a configuration the US calls its 'nuclear posture.'
• 2.Nine countries possess nuclear weapons, including one that officially denies having them. American nukes are not confined to US soil — they are stationed in allied countries worldwide as part of a global deterrence strategy.
• 3.Mutual assured destruction transformed geopolitics by making great-power war irrational. Before nukes, rival empires historically fought for land, resources, and dominance; after 1945, any escalation leads to total annihilation, removing the concept of victory entirely.