There is only one explanation, they are alien scout fighters. The blue glow is easily explained as Cherenkov radiation, indicating that they are nuclear powered. Presumably, they are using the Iranian nuclear facilities to refuel their cores and this is clear proof or Iran's nuclear weapons ambitions. Only very highly enriched, weapons grade material would suffice for this type of craft.
I notice that these very advanced beings have dropped stealth technology altogether. We should learn something here.