In political manners and Security First of all as obvious in any other country if you do any behaviors Anti-Iranian or Anti-Iranian’s government as an opposition you may face some challenges same as other countries
About terrorism attacks!!! come on it’s not what you see on the media. I have many friends from other countries who came to Iran and travel and they don’t have any problem as long as they follow the rules here.
If you have drone you may can not import that to Iran or if you have it in Iran make sure you avoid launching your drone in the vicinity of any airlines.
What about dual-nationalities? I’m not sure exactly but they say Iran doesn’t recognize dual-nationalities same as other countries recognize it officially. So it’s better to talk to your lawyer or ambassador office before you come to Iran.
You can take photos and videos from every visitable and public places but taking pictures and videos from army and governmental places are forbidden. It’s not a big deal you will see the sign and you notice that you are not allowed to take a photo right here otherwise you are free to go.