Probably talking about Africa

There are 54 sovereign states (or countries) in Africa

https://short-facts.com/does-africa-have-54-or-55-countries/

Obama was talking about 57 Islamic "state"s (organized political communities)

https://www.flagpictures.com/organizations/organisation-of-islamic-cooperation/

Probably talking about Africa

There are 54 sovereign states (or countries) in Africa

https://short-facts.com/does-africa-have-54-or-55-countries/