The allied countries met to discuss their strategy.
Союзные страны встретились, чтобы обсудить свою стратегию.
Definitions
Allied countries refer to nations that have formed a coalition or partnership, typically for mutual defense or support during a conflict or war. This term is most commonly associated with the countries that opposed the Axis powers during World War II, including the United States, the United Kingdom, the Soviet Union, and China, among others.