> Nuclear bombs from the US were always under US control, even if positioned outside the US.
They really weren't, the nominal US control over them was always a figleaf to appease the requirements of Congress.
If you look into the history of US nuclear sharing you'll find that what these NATO countries wanted was independent nuclear capabilities in the event of an emergency. That's what they got in every way except formally on paper.
A relevant excerpt from "Command and Control" by Eric Schlosser:
> [...] Congressman Chet Holifield, the chairman of the joint committee, was amazed to find three ballistic missiles, carrying thermonuclear weapons, in the custody of a single American officer with a handgun. “All [the Italians] have to do is hit him on the head with a blackjack, and they have got his key,” Holifield said, during a closed-door committee hearing after the trip. The Jupiters were located near a forest, without any protective covering, and brightly illuminated at night. They would be sitting ducks for a sniper. “There were three Jupiters setting there in the open—all pointed toward the sky,” Holifield told the committee. “Over $300 million has been spent to set up that little show and it can be knocked out with 3 rifle bullets.” Foreign personnel weren’t supposed to enter the nuclear weapon igloos at NATO bases. But little had been done to stop them. A lone American soldier manned the entrance to the igloos, serving as a custodian of the weapons, not as an armed guard. Once again, security was provided by troops from the host nation, who also moved weapons in and out of the storage facilities. Senator Albert A. Gore, Sr., could hardly believe the arrangement: “Non-Americans with non-American vehicles are transporting nuclear weapons from place to place in foreign countries.”