The Marvel Universe is strongly based on the real world. Earth in the Marvel Universe has all the features of the real one: same countries, same personalities (politicians, movie stars, etc.), same historical events (such as World War II), and so on; however, it also contains many other fictional elements: countries such as Wakanda and Latveria (very small nations) and organizations like the espionage agency S.H.I.E.L.D. and its enemies, HYDRA and A.I.M. In 2009 Marvel officially described its world's geography in a two-part miniseries, the "Marvel Atlas".