SPECTER replaced SMRSH in the 007 franchise (James Bond).

In the 007 franchise, the SPECTER organization has always been seen as James Bond’s number one enemy. However, this was not always the case. Originally James Bond’s most difficult adversary in Fleming’s career was SMRSH.
If so, what prompted the author to introduce another antagonist to address our British secret agent?
SPECTER SMRSH succeeded.
The SPECTER organization was first mentioned in the James Bond universe in Fleming’s 1961 novel. This new opposition came as a replacement for the Soviet Union’s anti-intelligence organization SMERSH. SPECTER organization in the James Bond 007 movie by Dr. No.
However, if we refer to Fleming’s works, SMRSH was indeed Bond’s worst enemy. But following Fleming’s change of antagonist and SPECTER’s prominence in the James Bond films, this organization knows how to find Bond’s nemesis.
The SPECTER organization
SPECTER is a criminal organization whose scope of influence is beyond comprehension. This organization has dark plans and is ready to do anything to achieve its goals. Some SPECTER agents, such as Dr. No and Emilio Largo, have attempted to take over governments and even cause nuclear war.
Nothing seems to stand in the way of SPECTER’s ambitions and their agents are as armed as James Bond to achieve their goals. But Bond’s biggest rival in this organization is SPECTRE leader Ernst Stravo Blofeld. In the first films, the rivalry between the two men was already evident. However, this rivalry gives way to mutual hatred after Blofeld plots to kill Bond’s favorite Tracy.
The reasons for this change of opposition
In Fleming’s first eight novels, the enemies James Bond encounters are all associated with the SMERSH organization. If we have to stick to the chronology, the Bond novels are all set in the heart of the Cold War. It was only natural that Bond’s enemies were mainly agents of the Soviet Union to keep abreast of current events.
However, Fleming believed that evolution was necessary, because the Cold War would not last forever. Also, using a real-world organization can drag jump stories. This is how the author decided to create the fictional organization SPECTRE for his latest book. The rest, you already know.
Bond’s first film, Dr. No, features Agent 007 as a SPECTER agent. Instead, Fleming no longer had to worry about the realistic constraints of the Bond novels and the films that might follow. The hero is no longer trapped in the Cold War and now faces criminals from all walks of life.
Source: ScreenRant