How come Cyprus never became a NATO member?

Because the British have always opposed it. Until 1959 Cyprus was under British control and de facto a part of NATO. read more

Not properly, as far as I’m aware there has never been a full on war declared between two NATO members, but there have been several disputes between NATO countries. The one that comes to mind is the Turkish invasion of Cyprus, which although technically speaking wasn’t against another NATO member it did involve a dispute between Greece and Turkey. read more

PfP is a North Atlantic Treaty Organisation (NATO) programme aimed at creating cooperation between NATO and other states in Europe and the former Soviet Union; 22 states are members. Cyprus is the only EU member state that is neither a NATO member state nor a member of PfP. read more