Franz had long entertained the idea of acting against Bismarck, but with so many people in Europe sharing the same name, how could one tell them apart before they rose to prominence?
With identities uncertain, naturally nothing could be done.
By the time Bismarck's identity was confirmed, he had just transitioned from being the representative of the Kingdom of Prussia in Frankfurt to serving as the envoy to the New Holy Roman Empire.
Murdering an envoy on one's own territory would have dire consequences. The political risk was too significant; Franz was not one to take such risks.
Now that Bismarck had been reassigned as the envoy to Russia, the situation was different. As long as it was done carefully, even if he were killed, any trouble would be a headache for the Tsarist Government.
