Kumogakure

Kumogakure no sato (雲隠れの里), or Village Hidden in the Clouds, is located in the Land of Thunder. As one of the five great ninja villages, Kumogakure has a Kage as its leader known as the Raikage. The ninja from this village seem to specialize in lighting based jutsu. Yugito, the container of the two-tailed demon cat, comes from here.

Village in History
The village of Kumogakure seemed to have been at war with Konohagakure, but signed a peace treaty with the Tree-Leaf Village to end the war. However, the peace agreement was broken when a Lightning shinobi attempted to kidnap Hinata Hyuga. Many believe that the deed was done so that the Byakugan could be researched, but the Lightning ninjas denied all claims, but demands a shinobi with the Byakugan as payment for the death of one of their shinobi. It is this incident in which Neji Hyuga's father offered himself to be given to the Lightning village as a corpse. This event triggers Neji's hatred towards the Main Branch of the Hyuga clan.