Political online game and economic simulation

Having played this game a while, I've always wondered about what actually happens when you take special actions.

State Visit and Recruitment appear to be permanent reputation and military force increases, as does Regimen for the regent's health. But what really happens when "address an audience" occurs? Does it just boost your popularity temporarily?

During declarations of war (for world states), does your reputation eventually return to equilibrium, or is it a permanent decrease?

I have to admit that I did not often use it. Its effect seems to be comparable to taking a favorable response in a task. Taking this action can be a good early on in a state with low popularity before an election in order to increase the chances for a reelection. The gain is otherwise limited.

Permanent. However, it's still possible to increase the reputation via ratings (from other states) and tasks.