For sure smaller countries like Australia, Sweden, etc. would need more time.
They might not have the industrial base like Japan or Germany but they are still way ahead of most other countrys in the world.
In the end we run off-topic.
Is anybody disagreeing that Japan is able to build advanced nuclear weapons and delivery systems within a short time if necessary?
ABM and maybe an improvement of their ground attack and standoff capabilities is the way to go.
They might not have the industrial base like Japan or Germany but they are still way ahead of most other countrys in the world.
In the end we run off-topic.
Is anybody disagreeing that Japan is able to build advanced nuclear weapons and delivery systems within a short time if necessary?
ABM and maybe an improvement of their ground attack and standoff capabilities is the way to go.