Nuclear Armageddon. …the entire stockpile of U.S. intercontinental ballistic missiles (ICBMs) — 448 active — is essentially aimed squarely at Russia. Russia’s hundreds of ICBMs are probably returning the favor. In all, the U.S. has about 7,700 nuclear warheads, including 1,950 warheads ready to deploy via ICBM, submarine, and airplane, plus thousands more in mothballs or waiting to be dismantled, according to the latest tally by the Federation of American Scientists. Russia has slightly more warheads overall — about 8,500 — but a slightly fewer 1,800 of them operational.