NATO was established in 1949 at Washington. This was a military pact formed by 15 European countries under the leadership of America against Russia. The members were America, Britain, France, Belgium, Canada, Portugal, Netherlands, Luxemburg, Italy, Norway, Denmark and Iceland. Later, Federal Republic of Germany, Greece and Turkey joined this group. Hungary and Poland joined NATO in 1999. At present NATO has 27 members. NATO members passed a resolution to help the members if attacked by any foreign power and to fight the enemy united. NATO has a contributory military unit and its Headquarters is in Paris.
