The Aikikai is the common name for the style headed by Kisshomaru Ueshiba, O-sensei's son, as taught under the auspices of the International Aikido Federation. Most regard this school as the main-line in Aikido development. In reality, this "style" is more of an umbrella than a specific style, since it seems that many individuals within the organization teach in quite a different manner. The Aikido taught by Ueshiba-sensei is generally large and flowing, with an emphasis on a standard syllabus and little or no emphasis on weapons training. Other teachers within the auspices of the Aikikai (like Saito sensei) place much more emphasis on weapons practice.