Yes, but "joined" should be "join" in order for the question to be grammatically correct.
At the request of China, the US helped China defend itself against aggression.
General Douglas MacArthur was placed at the head of UN Forces in the Korean War (which was the conflict that resulted when the UN acted to thwart North Korean aggression against Seoul and South Korea generally.
The Gulf of Tonkin resolution was passed on August 7, 1964. It gave Congressional approval to expanding the United States presence in Vietnam. The US Congress gave Johnson permission to take "all necessary measures to repel any armed attack against the forces of the United States and to prevent further aggression."
The Persians and their Greek allies were united to prosecute the war. Many Greek city-states were united against the Persian and allied forces.
yes
First Gulf War, 1991.
The Australian Defense Forces generally protects the country from external aggression.
Mainly the USA but also Australia and New Zealand contributed naval and air forces.
The United States and The United Kingdom
Johnson asked congress for power to take "all necessary measure to repel any armed attacks against the forces of the united states and prevent further aggression."
The Eisenhower Doctrine , given in a message to the United States Congress on January 5, 1957, was the foreign policy of U.S. President Dwight D. Eisenhower. The doctrine stated that the United States would use armed forces upon request in response to imminent or actual aggression to the United States. Furthermore, countries that took stances opposed to Communism would be given aid in various forms.
United Democratic Forces of Rwanda was created in 2006.