From Japan, 1941: Countdown to Infamy, by Eri Hotta (Vintage, 2013), pp. 75-78:
By February 1932, the three Manchurian provinces of Liaoning, Heilongjiang, and Jilin were all under the control of the Japanese army. That garrison forces could occupy portions of China without formal approval sent a dangerous signal. Young and frustrated soldiers, willing to blame those in power for various social and economic difficulties facing Japan, had been wanting to force radical change for some time. Now inaction in Tokyo and the absence of clear instructions from the top invited further violent actions. The ancient samurai would have called this a retainer supplanting his lord. In modern military terms, it was simple insubordination. Yet no army leader was willing to put his foot down.
Japan’s actions in Manchuria marked a major step toward political isolation, even though very few Japanese recognized it as such. The Kwantung Army’s establishment of the puppet state of Manchukuo—comprising the captured provinces—was proclaimed on March 1, 1932. International condemnation followed. On May 15, a group of young naval officers and army cadets burst into the prime minister’s official residence and shot Inukai; he died that evening. The killers were alarmed that Inukai was becoming soft on China, possibly yielding Japanese control of Manchukuo. Japan had been an exemplary member of the League of Nations throughout most of its existence, but the country renounced its membership in March 1933 on account of Manchukuo.
Sino-Japanese relations did not break down entirely, however, because of the confluence of pragmatic interests on both sides. Through the mid-1930s Tokyo oscillated between a more cautious, even friendly, China policy and a hardline approach backed by military pressure. Chiang, preoccupied by the problem of consolidating his control over the rest of China, and especially by fighting the Communists who had established independent “Soviet Republics” in the hinterland of southern and central China, seemed willing to overlook the sticky question of Manchukuo for the time being. He certainly did his best to avoid major clashes with Japan in the north. Recognizing a window of opportunity, the Kwantung Army expanded Japan’s sphere of influence first toward Rehe (Jehol) Province, west of Manchuria, which became part of Manchukuo in 1933, and then toward the nearby areas of Hebei and Chahar (Inner Mongolia). In a series of Sino-Japanese agreements reached in 1933 and 1935, the Guomindang accepted humiliating terms that included partial demilitarization of North China, the withdrawal of the Guomindang organizations from Manchukuo’s vicinity, and the establishment of autonomous, pro-Japanese governments in East Hebei and Chahar.
At home, as Japanese society struggled to recover from the economic slump caused by, among other things, the worldwide depression, fear and unrest were growing. In this dismal atmosphere, on February 26, 1936, a nearly successful coup was launched in Tokyo by young army officers. The officers assassinated several key government figures before surrendering. Prince Saionji, the principal target of the assassins, escaped. Prime Minister Hirota Koki’s cabinet was formed on March 9, but only after Prince Konoe had declined to assume the post, claiming poor health. (He may well have not wanted to purge elements sympathetic to the rebel officers, as he himself wished to remain on good terms with them. His later attempt to pardon the indicted officers only corroborates this view.)
Hirota’s government now adopted a tougher foreign policy as a way to divert domestic discontent. It called for a military buildup in preparation for a possible war with China, the Soviet Union, and the Western powers, all the while making plans for advancing into Southeast Asia. The Japanese policy shift was immediately felt in China, which explains the volatile atmosphere at the Marco Polo Bridge. The number of Japanese troops had tripled in 1936, to almost six thousand, without prior consultation with the Chinese.
China’s domestic situation had substantially changed by then. Japanese expansionism and Chiang’s ambition of leading a strong, unified China could only cohabit for so long. Because of his earlier concessions to Japan, Chiang had become increasingly vulnerable to Communist propaganda, which painted him as a traitor to the nation who gave into Japanese imperialist pressure and who was willing to sacrifice fellow Chinese. The decisive turning point happened in December 1936, when Chiang was kidnapped by the Young Marshal, Zhang Xueliang, the son of Zhang Zuolin, a Manchurian warlord assassinated by the Japanese in 1928; Zhang wanted Chiang to join a united front against Japan together with the Communists. To preserve his legitimacy as China’s national leader, Chiang decided he could no longer afford to look conciliatory toward Japan. This meant that he and the Japanese army stopped sharing the same priority of defeating the Communists, be they Chinese or Soviet. This development, in turn, persuaded the Japanese military hardliners to push for a more aggressive policy, especially in the north, to sustain and maximize its existing interests.
