What does the FIDE do besides organize the international tournament? What does the FIDE do besides the organize the international tournament?  Or does the FIDE specialize in the tournament?
(I am not an expert so the following list will be incomplete.)

FIDE does:


calculate Ratings
issue Titles (CM/WCM, FM/WFM, IM/WIM, GM/WGM)
defines the chess rules
umbrella organization for national organizations
issue "Medal of Merit Awardees"
and overall try to promote-improve chess (like try to make chess part of the Olympic games)