What was the key difference between NATO and the Warsaw Pact? OA. NATO is an organization not open to admitting any other countries whereas the Warsaw Pact allows any country to join.
OB, NATO is a treaty between North America and Europe whereas the Warsaw Pact was an agreement between communist nations during the Cold War.
OC. NATO and the Warsaw Pact had different views about global affairs.
D. The Warsaw pact is an agreement that still exist today and NATO fell apart after the Cold War.