Eh, yes and no. Red Alert 1 is part of both the Red Alert and Tiberium series. One ending results in RA2 and the other in Tiberian Dawn (C&C '95) but there's no consensus on which ending leads to which game. I think that the Allied ending leads to TD and the Soviet ending leads to RA2, but there are arguments the other way, too.
Reminds me of that twilight zone episode where she goes back in time and swaps baby Hitler for a kid she found on the street without the parents noticing. Turns out that baby on the street was the Hitler we knew and she caused the holocaust.