Kalmar NATO a turance na nufin North Atlantic Treaty Organization wato Arewa Atlantic yarjejeniyar Organization (NATO, /n eɪ t oʊ / ; French: Organisation du traité de l'Atlantique nord , OTAN ), Wanda kuma ake kira Arewa Atlantic Alliance, shi ne wani gwamnatoci soja alliance tsakanin 28 kasashen Turai da kuma 2 North American kasashe. Kungiyar tana aiwatar da Yarjejeniyar Arewacin Atlantika wacce aka sanya wa hannu a ranar 4 ga Afrilu 1949. NATO ta ƙunshi tsarin tsaro na gama -gari, inda ƙasashe membobinta masu zaman kansu suka amince da tsaron juna don mayar da martani ga kowane ɓangare na waje. Hedikwatar NATO tana cikin Haren, Brussels, Belgium, yayin da hedkwatar Ayyukan Hadin gwiwar ke kusa da Mons, Belgium. A ranar 4 ga Maris 1947, Faransa da Burtaniya sun rattaba hannu kan Yarjejeniyar Dunkirk a matsayin Yarjejeniyar Kawance da Taimakon Mutum idan akwai yiwuwar Jamus ko Tarayyar Soviet su kai hari bayan yakin duniya na biyu. A cikin 1948, an haɓaka wannan ƙawancen don haɗawa da ƙasashen Benelux, a cikin tsarin Tarayyar Yammacin Turai, wanda kuma ake kiranta da Kungiyar Kasashen Turai ta Brussels, wanda yarjejeniyar Brussels ta kafa.