In 1976, some countries belonged to the North Atlantic Treaty Organization, some to the Warsaw Pact, and some to the Non-Aligned Movement… and some belonged to none of these groups. Click where each of these countries sat in 1976.
The Non-Aligned Movement is a collective of countries not wishing to be involved in international conflict, not just neutral countries.
Hint: middle powers who are aligned with one side would often belong to none of these groups.