But a judgment of political actions -- and the murder of the last Romanovs was a political act -- must at least include a discussion of the longer history and larger forces at play.
Had I had a voice in the Ural Soviet, I would have voted against killing the children. However, I would have understood the arguments of others who felt keeping them alive was a risk, and I would have harbored some worry on that account myself.
The Ural Soviet probably made their decision based on guesses about what the Romanovs or their supporters might attempt were they to be freed by the Whites. I doubt the Soviets were very clear on how little real interest there was among the Whites in a Romanov restoration.
Had the Soviets actually known what really
had been discussed at various times about imperial succession, though, they would have been confirmed in their fears.
For instance, before Alexis was born, Nicholas and Alexandra floated the idea of changing the law of succession to allow Olga to succeed. More tellingly, the proposal included the provision that Alexandra would be made regent should Nicholas die during Olga's minority.
This indicated an extraordinary determination on the part of Nicholas and Alexandra to keep the throne within the control of Nicholas' immediate family rather than within the larger Romanov clan, even if it meant amending the succession law to do it. Had they not encountered serious resistance, they would have gone so far as to make Alexandra regent instead of other sons of Alexander III.
If the Bolsheviks had killed just Nicholas, if Alexandra and the children had somehow been rescued by the Whites, and if support could be mounted for a Romanov restoration, I think Alexandra would have done all she could to have made her children -- male or female -- the rallying point, rather than other healthy male Romanovs.
Today we all know such support had very little probability of forming. But that comes from the benefit of hindsight and greater knowledge of what was going on inside the White resistance than the Ural Soviet could have had.
From their perspective,
any member of Nicholas' immediate family left alive posed a threat.
The great irony is that, if Alexandra could have had things her way, they would have been exactly right.