North Korea launched its longest-range, most capable missile ever on Friday morning, and experts say that all of the US, besides Florida, now lies within range of a nuclear attack from Kim Jong Un.

Fortunately, unlike an attack from a nuclear peer state like Russia, North Korea's less-advanced missiles would only be expected to hit a few key targets in the US. And even that limited attack would still take North Korea years to prepare for, since it still needs to perfect its missiles engines with more tests, in addition to guidance systems. It also needs to build and deploy enough of them to survive US missile defenses.

But a North Korean propaganda photo from 2013 showing Kim Jong Un reviewing documents before a missile launch (pictured to the right) may have inadvertently leaked the planned targets for a nuclear attack on the US. On the wall besides Kim and his men, there's a map with lines pointing towards some militarily significant locations.

(Skye Gould / Business Insider)

In Hawaii, one of the closest targets to North Korea, the US military bases Pacific Command, which is in charge of all US military units in the region. San Diego is PACOM's home port, where many of the US Navy ships that would respond to a North Korean attack base when not deployed.

Barksdale Air Force Base in Louisiana holds the US Air Force's Global Strike Command, the entity that would be responsible for firing back with the US's Minuteman III intercontinental ballistic missiles.

Washington D.C., of course, is the home of the US's commander-in-chief, who must approve of nuclear orders.

All in all, the targets selected by North Korea demonstrate a knowledge of the US's nuclear command and control, but as they come from a propaganda image, they should be taken with a grain of salt.

North Korea has developed nuclear weapons as a means of regime security, according to more than a dozen experts interviewed by Business Insider. If Kim ever shot a nuclear-armed missile the US's way, before the missiles even landed, US satellites in space would spot the attack and the president would order a return fire likely before the first shots even landed.

As unique as Kim is among world leaders, he must know a swift deposal awaits him if he ever engages in a nuclear confrontation.

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