6 h 9 m, 14 maio 1955 ano - Warsaw Pact

Descrição:

The Warsaw Pact was a direct response to the formation of NATO, and had similar policies. Both organizations agreed that if any nations in their respective organizations got involved in a military conflict, they would aid them in that conflict. Members included communist countries like the Soviet Union, Poland, Hungary, Romania, and many others.

https://en.wikipedia.org/wiki/Warsaw_Pact

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