What country will first denote a nuclear weapon in combat?

In the eventuality of a nuclear weapon being used, which country is most likely to detonate it first?

First country to conduct offensive nuclear strike (before 2035)?

Which country will be the first to add commercially viable nuclear fusion energy to their power grid?

Will any country that is not currently known to have nuclear weapons detonate a nuclear weapon in 2025? (Tests included)

What country will detonate the next nuclear weapon?

If nuclear weapons are utilized in the India Pakistan conflict, which country will pull the trigger first.

What will be the next country to come into possession of their own nuclear weapon?

Which countries will detonate a nuclear weapon offensively in 2025?

In the eventuality of a nuclear weapon being used, where it will be dropped first?