Answer:

– Gulf of Tonkin incident

Explanation:

The incident in the Gulf of Tonkin was a false flag operation organized by the secret services of the United States, to be used as a pretext in their participation in the Vietnam War; This simulated a false attack by forces belonging to North Vietnam against United States Navy ships in Southeast Asia, which had penetrated waters that the United States claimed as international, but which Vietnam claimed as nationals. Videos were presented as evidence of such attacks and this served as a pretext for President Lyndon B. Johnson to ask Congress for a large extension of military missions carried out by soldiers assigned as military advisers in Vietnam, and with it, the beginning of the massive intervention of the United States in that war, going from 60,000 soldiers that were already operating in Vietnam to 500,000 at the moments of greatest intensity of the conflict.