Executive Meddling: Red Alert 3's DRM ,which was one of the reasons why the game was (along with forgetting in some copies to add the 20th cd-key digit) a failure in terms of profit, apparently it was this economic failure along with the resources lost in Tiberium what convinced EA executives to make Tiberian Twilight.
Players unfamiliar with the game may get a bit of nostalgia when they first hear of the name "General Krukov", which is one letter away from the famous traitor "Kukov" from RA1. Turns it out may have been intentional, as guess who betrays you about halfway through the Soviet Campaign?
Reality Subtext: Actor Nicholas Worth, who played Premier Romanov, died a year before Red Alert 3 was released. The game explains his absence by saying he has fled.