>

Other than Iran and Azerbaijan, the Shia spread out across the Middle East are often persecuted and oppressed. Just like any other religious minority. So everyone has some sort of resentment towards the Sunni sect.
If UAE is short of engineering and vanity projects, how about digging a two way channel from Dubai to Oman for very large ships. Might involve boring a 100m diameter tunnel through a mountain range, or two. >

Don't give them ideas... >

I'm not sure why they bother. Most of the fighting they do is insurgent forces and funding of them. >

Probably test them to sell to Russia. Or test them to prepare for a future conflict with the Saudis and Israelis >

Iran military drones?  Do they even have any?  Here I was under the impression they only have terrorist drones. >

They are surrounded by people who hate them. >

What do you mean?