Re: I'm not even sure why I should care if Iran has nukes
Exactly. Perhaps a quick history lesson on nuclear weapons is in order.
SHORT VERSION
Any country that wants nuclear weapons has had them for a long time.
LONG VERSION
In 1939 Albert Einstein and other scientists sent a letter to President Roosevelt proposing what became the atomic bomb.
In 1945, six years later, the US exploded three atomic weapons. The Hiroshima bomb was a gun bomb where enriched uranium was shot together at very high speed to create the fission reaction. The Nagasaki bomb used explosives to compress the plutonium fuel perfectly to create the fission reaction. The first test, Trinity, also used explosives to compress the fuel just like the Nagasaki bomb but the gun design was considered more reliable so it was chosen for the first attack.
In 1952, seven years later, the US exploded the first so-called "hydrogen bomb", a fusion weapon. A hydrogen bomb actually explodes when an atomic bomb a few feet away from the fusion fuel is first exploded. The energy from the exploding atomic bomb is captured and redirected to create the force needed to compress the fusion fuel perfectly before the atomic bomb scatters the fusion fuel to the winds.
Think about the math behind that.
That's why the old Vela satellites looked for a characteristic double peak when trying to detect an H bomb test. The smaller peak was the A bomb followed by the taller peak, the H portion. Once again proving that timing is critical. :)
It was all done in a mere thirteen years using slide rules, manual calculations, and manual experimentation. 13 years from concept to The Big One.
While centrifuges are a more efficient way of enriching uranium it’s not the only way. In fact, the Manhattan Project during WWII used gaseous diffusion running in Oak Ridge, TN , not centrifuges. Gaseous diffusion requires a lot of electricity which is why a TVA hydroelectric-powered site was chosen, but Iran has Russian reactors now to create massive amounts of electricity. And processes have gotten a lot more efficient in the last half-century.
Then the Atomic Energy Commission created their "Atoms For Peace" program and released massive amounts of design information to the world. Then they decided that was a bad idea but the information was already out there.
And now, 70+ years after the USA exploded the first hydrogen bomb, politicians are still saying "We can't let (fill in the blank) get The Bomb!"
Folks, any country that wanted nuclear weapons had 70 years and computers to do what the USA did in 13 by hand.
With all of the piss-poor security, computers, and the Internet, literally all of the necessary design data was stolen long ago. I'm pretty sure Iran and others can figure out how to build a gun-type weapon. Let's not forget about any fissionable material that was lost when the Soviet Union collapsed. The weapons themselves will degrade without maintenance but the half-life of the fissionable material is still good for a dirty bomb, if nothing else.
Heck, I remember visiting the US Air Force Museum in Ohio as a kid. They had two working models of atomic bombs there, one of each type. I "pushed the button" and the models showed the basics of how each weapon worked with moving parts followed by a bright light.
The takeaway to me is that the "We can't let (fill in the blank) get The Bomb!" is simply a public opinion control mechanism that has worked stunningly well to justify all sorts of aggression for over half a century.