NATO and The Warsaw Pact

The NATO pact was and intergovernment joining of military forces incase of foreign attacks. So lets say someone attacked US, Canada would be there to back us up because we are both apart of NATO and we were created to protect each other. Also they had to watch each others backs because of the cold war and all the tension between those countries and USSR and US nuclear weapons.
The warsaw pact is a similar treaty where the 8 communist countries in Europe signed a treaty where they will be there for each other incase of an attack from a foreign nation. They made this after the non-communist countries created NATO.
The ones who created warsaw pact were USSR and 8 other communist countries. The ones who created NATO were France, United States, United Kingdom, Canada, Portugal, Italy, Norway, Denmark, and Iceland