
Akihito is a member of the Imperial House of Japan who reigned as the 125th emperor of Japan, according to the traditional order of succession, from 7 January 1989 until 30 April 2019, Heisei era. He succeeded to the Chrysanthemum Throne upon the death of his father, Emperor Showa (Hirohito). Upon his abdication due to his age and declining health, he became Emperor Emeritus. He was succeeded by his eldest son, Naruhito, on 1 May 2019.

The America First Committee (AFC) was the foremost United States non-interventionist pressure group against American entry into World War II. Launched on September 4, 1940, the committee principally supported isolationism for its own sake, but many communists made use of the AFC as well as antisemitic and pro-fascist speakers who became its leaders. Membership peaked at 800,000 paying members in 450 chapters, making the AFC one of the largest antiwar organizations in the history of the United States. The committee was dissolved on December 10, 1941, three days after the attack on Pearl Harbor brought the United States into the war.

Setsuko, Princess Chichibu was a member of the Japanese Imperial Family and the wife of Prince Chichibu, the second son of Emperor Taishō and Empress Teimei. Setsuko was a sister-in-law of Emperor Shōwa and an aunt of the Emperor Akihito.

Churchill, Hitler and the Unnecessary War: How Britain Lost Its Empire and the West Lost the World, is a book by Patrick J. Buchanan, published in May 2008. Buchanan argues that both world wars were unnecessary and that the British Empire's decision to fight in them was disastrous for the world. One of Buchanan's express purposes is to undermine what he describes as a "Churchill cult" in America's élite and so he focuses particularly on how Winston Churchill helped Britain get into wars with Germany in 1914 and again in 1939.

Edward Frederick Lindley Wood, 1st Earl of Halifax,, styled The 1st Baron Irwin from 1925 until 1934 and The 3rd Viscount Halifax from 1934 until 1944, was a senior British Conservative politician and diplomat of the 1930s. He held several senior ministerial posts during this time, most notably those of Viceroy of India from 1925 to 1931 and of Foreign Secretary between 1938 and 1940. He was one of the architects of the policy of appeasement of Adolf Hitler in 1936–38, working closely with Prime Minister Neville Chamberlain. However, after the German occupation of Czechoslovakia in March 1939 he was one of those who pushed for a new policy of attempting to deter further German aggression by promising to go to war to defend Poland.

Human Smoke: The Beginnings of World War II, the End of Civilization is a 2008 book by Nicholson Baker about World War II. It questions the commonly held belief that the Allies wanted to avoid the war at all costs but were forced into action by Adolf Hitler's aggression. It consists largely of official government transcripts, newspaper articles, and other documents from the time, with Baker only occasionally interjecting commentary. Baker cites documents that suggest that the leaders of the United States and the United Kingdom were provoking Germany and Japan into war and had ulterior motives for participating. He dedicates the book to American and British pacifists of the time who, he states in the book's epilogue, were right all along: “They failed, but they were right.”

In May 1940, during the Second World War, the British war cabinet was split on the question of whether to make terms with Nazi Germany or to continue hostilities. The main protagonists were the prime minister, Winston Churchill, and the foreign secretary, Viscount Halifax. The dispute escalated to crisis point and threatened the continuity of the Churchill government.