Maybe some alien civilization does know about us, but it slightly afraid since we spec’ed in the war tree instead of space travel.
They kept letting us advance our war machines until one day they needed us. To help stop a greater evil; since they went space exploration instead of guns
I think if there are actual aliens and they are actually showing us that they can interfere with our nuclear equities its a last ditch effort to prevent us from killing ourselves without directly interfering. If they were involved in some sort of war I doubt we’d really be any use to them. If they’re advanced enough to travel lightyears to our planet then our weaponry is as primitive as a cavemans club.
Then again maybe its humans are space orcs thing lol