The Gulf of Tonkin Resolution was a congressional measure passed in August 1964 that granted President Lyndon B. Johnson the authority to use military force in Vietnam without a formal declaration of war. This resolution was pivotal in escalating U.S. involvement in the Vietnam War, as it was based on alleged attacks on U.S. naval vessels by North Vietnamese forces, although later evidence suggested that the incidents may have been exaggerated or misrepresented.
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