Roosevelt expertly employed the idea of kairos, which relates to speaking in a timely manner; this made the Infamy Speech powerful and rhetorically important. Delivering his speech on the day after the attack on Pearl Harbor, Roosevelt presented himself as immediately ready to face this issue, indicating its importance to both him and the nation. The timing of the speech, in coordination with Roosevelt's powerful war rhetoric, allowed the immediate and almost unanimous approval of Congress to go to war. Essentially, Roosevelt's speech and timing extended his executive powers to not only declaring war but also making war, a power that constitutionally belongs to Congress.