My mother has told me similiar things. A lot of people in Iran are apparently saying that the gulf Arab countries and US were somehow preventing rain because Iran has been in a drought for a few years now.

Personally I've not seen any evidence for this beyond what could be a mere coincidence. Though if someone more adept in the fields of meteorology and climatology could way in on it, that would be much appreciated. Personally I just assume it's climate change and extreme weather conditions.