Who makes the decisions around the nuclear weapons stationed abroad?

Answer

The United States insists that it maintains operational control of these weapons but it is the armed forces of the so-called “hosting” countries who would ultimately use the weapons, if the order is given.  Belgium, Germany, Italy, the Netherlands and Türkiye have specialised squadrons trained to drop the weapons from fighter jets, which are currently being modernised with the acquisition of the nuclear-capable F35A. 

Military personnel from these countries would therefore be responsible for using these weapons. They practice to do so during an annual week-long “deterrence exercise” by NATO carried out with aircraft and military personnel from member states. What NATO calls a “routine, recurring training activity“ is a yearly drill on the logistics of using weapons of mass destruction in one of the world’s most densely populated regions. These missions train the military personnel from these countries to do things like fly dual-capable aircraft, run surveillance and refuel aircraft in order to wipe out entire cities and mass murder civilians.

Reports on Russia’s deployment of nuclear weapons in Belarus suggest they will be delivered by nuclear-capable Iskander missiles and aircraft, given the Russian defense ministry has said Belarusian pilots are being trained in their use.

The NATO states, which all say they are democracies, refuse to confirm or deny that they are keeping nuclear weapons on their territory which means their citizens are denied the right to know and are denied a say in whether these weapons of mass destruction are stationed near their homes, making their cities, towns and villages targets. This lack of transparency also means their governments would be responsible for the indiscriminate killing of huge numbers of people in their name if these weapons of mass destruction are used.

Related questions:

What is nuclear sharing and who is involved?
What are the risks of nuclear sharing?
Is nuclear sharing legal?