how imperialist Japan is a threat to the whole international community.
Explanation:
President Roosevelt develops the idea of how imperialist Japan is a threat to the whole international community in paragraphs 1–14 of the speech excerpt. He strongly condemns Japan's treachery and bombing of the
American Island of Oahu, Hawai on the 7th of December, 1941.
Roosevelt includes details of Japan's deliberate attack on several other nations like Hongkong, Phillipines, Guam and Wake Islands to describe Japan's role in inflicting conflicts and war between countries.
No, it is generally not true that when summarizing the of a plot, that one should notice the key ideas about how the conflict builds, since plot summaries depend less on why conflicts occurred, and more on why they occurred.