A small nation has recently discovered an old, powerful Airship. The world knows this Airship only in legend and the possibilities that it can offer to any nation are endless.
Although the Airship has no weapons, it has the ability to be undetectable by the other nations. It contains a completely autonomous crew to operate it. While other airship technologies can move armies in months, this one can do it in weeks.
Although this nation has promised to not use it for evil, the character of those who control it is known to be extremist, and they are known for pushing their ideals on those who don't share them. They are the very idea of children with super weapons essentially.
This is a fantasy setting with Steampunk elements their tech level is that World War II Tech, although instead of electricity, they have a magical equivalent and is powered by a non-renewable magical resource we will call it shards.
These shards are the ultimate capacitors; being able to take in almost any form of energy and store it for use later is a feat unseen in any other materials in this world.
It should be know in this world airships are restricted by a height limit and are powered by a non-renewable magical resource essential a shard that contains the magical energy. This Ancient/Super Airship is not restricted by those height limits and is powered by some other means. The load capacity of this would be the equivalent of the population of United States. This is essentially a giant floating city.
This Airship doesn't abide by the rules essentially it can hide in plain sight up in the sky and not be seen by anyone. basically think the difference between something being between Troposphere where all other airships file and the Stratosphere where the Ancient Airship files.
This Ancient Airship is able to transport millions of people at the drop of a hat. It has the ability to go right above a city and drop down to deploy forces in an instance. Think of it this way, there is no need to have a siege on a city since you can deploy your forces right on top of it. Since the storage of the thing is so large you can store it with bombs that you can drop onto a nations capital or city without them even realizing they are under attack, you can even go more simplistic and just fill the thing with large rocks and create an artificial meteor storm right on top of your enemies.
In a UN like alliance, what restrictions could other nations in the world set on such a weapon to protect themselves and hold this nation accountable, what can reasonably asked of them to ensure they don't decide to turn on any member of this alliance and restrict them on this major advantage the have over all the other nations? How do you regulate such a weapon? What topics would be discussed about this weapon how could we make sure its used in the right way and not the wrong way? I'm looking for all and any solutions that can be done about this.
Note: Although all the nations in the group are allied and are working to protect the world from evil, they do all fear this weapon and those who control it.