Turkey attacked Cyprus not Greece. Greece was allied with Cyprus, but there have been other cases of NATO countries supporting different sides on war (which often involves Turkey).
Greenland is a territory of a NATO country, so an attack on Greenland is an attack on NATO.
Turkey attacked Cyprus not Greece. Greece was allied with Cyprus, but there have been other cases of NATO countries supporting different sides on war (which often involves Turkey).
Greenland is a territory of a NATO country, so an attack on Greenland is an attack on NATO.