--- title: Top Secret Cold War Nuclear Hit List: What to Know About It description: Recently declassified documents shed light on top-secret Cold War plans canonical: https://time.com/4159981/cold-war-nuclear-hit-list-history/ author: Lily Rothman article:opinion: false article:content_tier: free article:published_time: 2015-12-23T17:43:50.000Z article:modified_time: 2026-08-04T07:41:47.181Z article:section: History og:title: What You Should Know About That Top-Secret U.S. Nuclear Hit List og:description: Recently declassified documents shed light on top-secret Cold War plans og:url: https://time.com/4159981/cold-war-nuclear-hit-list-history/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt35da04c30078a71c/698876b2cf40a87188c41381/nukes.jpeg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 1200 og:image:height: 675 og:image:alt: Nuclear Test USA og:type: article twitter:card: summary_large_image twitter:title: What You Should Know About That Top-Secret U.S. Nuclear Hit List twitter:description: Recently declassified documents shed light on top-secret Cold War plans twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt35da04c30078a71c/698876b2cf40a87188c41381/nukes.jpeg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # What You Should Know About That Top-Secret U.S. Nuclear Hit List > Sponsored content. 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They are at time.com/newsletters and are separate from a paid subscription. ## Video: Inside North Korea's Nuclear Threats [Watch (HLS stream): Inside North Korea's Nuclear Threats](https://cdn.jwplayer.com/manifests/PI9fO6wi.m3u8) (1:53)  _Published 2015-12-11_  by [Lily Rothman](https://time.com/author/lily-rothman/)  ## Lily Rothman Rothman is managing editor at TIME. Dec 23, 2015 5:43 PM UTC  The Priscilla nuclear test, part of Operation Plumbbob. June 25,1957. The Priscilla nuclear test, part of Operation Plumbbob. June 25,1957. Galerie Bilderwelt / Getty Images  by [Lily Rothman](https://time.com/author/lily-rothman/)  ## Lily Rothman Rothman is managing editor at TIME. Dec 23, 2015 5:43 PM UTC The recently declassified [top-secret U.S. military document](http://nsarchive.gwu.edu/nukevault/ebb538-Cold-War-Nuclear-Target-List-Declassified-First-Ever/) that was published on Tuesday by the National Security Archive at the George Washington University is shocking for a number of reasons. Written in 1956, the Cold War-era report, titled the Strategic Air Command (SAC) “Atomic Weapons Requirements Study for 1959,” contains a list of targets that would be priorities in the case of atomic war with the Soviet Union and its allies. As analyst William Burr points out in his [extremely thorough explanation](http://nsarchive.gwu.edu/nukevault/ebb538-Cold-War-Nuclear-Target-List-Declassified-First-Ever/) of the document’s context and significance, the list of airfields and industrial targets also included urban centers, indicating that “people as such, not specific industrial activities, were to be destroyed” in the event the plan was carried out. Given today’s knowledge of the long-term effects of atomic explosions, it’s clear that the plan so dryly laid out by U.S. intelligence would have resulted in death and destruction unlike anything the world had or has ever seen. But lurking behind the frigid calculus of Cold War nuclear strategy is a bit of context that the report’s authors might already have suspected in 1956: by the time the plan would have been put into effect in 1959, it would already have been pretty much obsolete. As Burr explains, the priority targets listed in the plan are those connected to Soviet air power, because the age of intercontinental ballistic missiles (ICBMs) had not yet arrived. In other words, the U.S. would use its own bombers to target Russian airfields because the only way to drop a nuclear weapon at the time was to ferry it to its target via plane.  Cover Credit: BORIS ARTZYBASHEFF Cover Credit: BORIS ARTZYBASHEFF But even as the report was being drafted, it was public knowledge that this technological limitation was changing. In fact, TIME devoted [a January 1956 cover stor](http://time.com/vault/issue/1956-01-30/page/1/)y to the impending arrival of the missile on the Cold War scene. Though official announcements remained “brief and vague” it was known that such missiles were the “No. 1 crash program of the U.S. armed services.” Long-range guided missiles with nuclear capabilities weren’t a new idea. Germany had used primitive versions of non-nuclear missiles in World War II, and the advantage of combining missiles with atomic power was obvious after 1945\. It had taken a decade, however, for computer and rocket technology to get to the point where such missiles were a near-term possibility. Another necessary development was the shrinking of nuclear weaponry. At a lighter weight, atomic bombs could be carried by lighter missiles propelled to higher speeds by lighter motors. That breakthrough “changed all the equations of scientific war,” TIME noted, “and it forced on the Department of Defense a grave decision: to concentrate intensively on the ICBM.” So why was the Strategic Air Command spending its time coming up with a plan for a 1959 attack that assumed a world without ICBMs? As TIME explained, the military was simply covering all its bases: --- > “” --- The development of ICBMs was especially important, not just because it would change the priorities for an imaginary nuclear war but also because it removed an attacker’s advantage. As TIME [put it](http://time.com/vault/issue/1956-07-30/page/13/) in July of 1956, the year the now-declassified plan was written, the “fear of atomic war stems from the fact that the aggressor still has an outside chance to profit from attack. The ICBM will end all hope for such aggression, however devastating, without sure and deadly retaliation.” With the advent of assured second-strike capability, the entire nuclear military calculus would change, rendering all non-ICBM plans for future strategy—like the document just released—fairly useless. By April 1957, TIME devoted another [cover story](http://time.com/vault/issue/1957-04-01/page/1/) to the topic of missiles. Much had changed in the intervening year. “In the Convair plant at San Diego one day last December,” the story began, “a mysterious piece of hardware was carefully cantilevered down from a vertical position inside a closely guarded seven-story shed. Draped in a white canvas shroud, lashed to a yellow, tubular steel trailer, the top-secret cargo was hauled out onto U.S. Highway 80 to begin a 2,500-mile trip across the southern U.S. … Under the shroud was Atlas, the U.S. intercontinental ballistic missile.” By [1959](http://www.nps.gov/mimi/learn/historyculture/atlas-icbm.htm), Atlas missiles were ready to use. The age of the nuclear bomber was over, and the age of the ICBM had begun. **_Read the full 1956 cover story about missiles, here in the TIME Vault:_** [The Missile](http://time.com/vault/issue/1956-01-30/page/1/) ### See What the Only Hiroshima Building to Outlast the Atomic Bomb Looks Like Today  Hiroshima Prefectural Commercial Exhibition Hall, circa 1930's. Courtesy of Hiroshima Peace Memorial Museum  September 8, 1945, an allied correspondent stands in the rubble in front of the shell of a building that once was a movie theater in Hiroshima, Japan, a month after the first atomic bomb ever used in warfare was dropped by the U.S. on Aug. 6, 1945.The damaged building standing in the background is the Hiroshima Prefectural Industrial Promotion Hall, currently preserved as the Atomic Bomb Dome. Stanley Troutman—AP Photo  View of the peace memorial, the Atomic Bomb Dome, in Hiroshima, Japan, 24 June 2015. Lars Nicolaysen—picture-alliance/dpa/AP Images  Doves fly over the Hiroshima Peace Memorial Park in western Japan on Aug. 6, 2015, during a memorial ceremony to mark the 70th anniversary of the atomic bombing of Hiroshima. 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