There are other organizations/treaties that do more or less what NATO does. Here are the mutual defense agreements from 2017: https://2009-2017.state.gov/s/l/t

There are other organizations/treaties that do more or less what NATO does. Here are the mutual defense agreements from 2017: https://2009-2017.state.gov/s/l/treaty/collectivedefense/index.htm https://2009-2017.state.gov/s/l/treaty/collectivedefense/ind... I'm not aware of a newer official source sadly. Though we do have a pretty map from 1956 here: https://www.loc.gov/resource/g3201f.ct004057/ https://www.loc.gov/resource/g3201f.ct004057/