In the years immediately following the Japanese seizure of
Manchuria in the fall of 1931, Japanese military forces
tactics of military intimidation and diplomatic bullying
rather than all-out attack, Japanese military authorities
began to carve out a new “sphere of influence” south of
the Great Wall.
Not all politicians in Tokyo agreed with this aggressive
policy—the young Emperor Hirohito, who had succeeded
to the throne in 1926, was himself nervous about
possible international repercussions—but right-wing terrorists
assassinated some of its key critics and intimidated
others into silence. The United States refused to recognize
the Japanese takeover of Manchuria, which Secretary
of State Henry L. Stimson declared an act of “international
outlawry,” but was unwilling to threaten the
use of force. Instead, the Americans attempted to appease
Japan in the hope of encouraging moderate forces in
Japanese society. As one senior U.S. diplomat with long
experience in Asia warned in a memorandum to the
president:
Utter defeat of Japan would be no blessing to the Far East
or to the world. It would merely create a new set of stresses,
and substitute for Japan the USSR—as the successor to Imperial
Russia—as a contestant (and at least an equally unscrupulous
and dangerous one) for the mastery of the East.
Nobody except perhaps Russia would gain from our victory
in such a war.
For the moment, the prime victim of Japanese aggression
was China. Chiang Kai-shek attempted to avoid a
confrontation with Japan so that he could deal with what
he considered the greater threat from the Communists.
When clashes between Chinese and Japanese troops
broke out, he sought to appease the Japanese by granting
them the authority to administer areas in North China.
But as Japan moved steadily southward, popular protests
in Chinese cities against Japanese aggression intensified.
In December 1936, Chiang was briefly kidnapped by
military forces commanded by General Zhang Xueliang,
who compelled him to end his military efforts against the
Communists in Yan’an and form a new united front
against the Japanese. After Chinese and Japanese forces
clashed at Marco Polo Bridge, south of Beijing, in July
1937, China refused to apologize, and hostilities spread.
Japan had not planned to declare war on China, but
neither side would compromise, and the 1937 incident
eventually turned into a major conflict. The Japanese advanced
up the Yangtze valley and seized the Chinese capital
of Nanjing, raping and killing thousands of innocent
civilians in the process. But Chiang Kai-shek refused to
capitulate and moved his government upriver to Hankou.
When the Japanese seized that city, he moved on to
Chongqing, in remote Sichuan Province. Japanese strategists
had hoped to force Chiang to join a Japanesedominated
New Order in East Asia, comprising Japan,
Manchuria, and China. Now they established a puppet
regime in Nanjing that would cooperate with Japan in
driving western influence out of East Asia. Tokyo hoped
eventually to seize Soviet Siberia, rich in resources, and
create a new “Monroe Doctrine for Asia” under which
Japan would guide its Asian neighbors on the path to
development and prosperity (see the box on p. 121). After
all, who better to instruct Asian societies on modernization
than the one Asian country that had already
achieved it?
During the late 1930s, Japan began to cooperate with
Nazi Germany on a plan to launch a joint attack on the
Soviet Union and divide up its resources between them.
But when Germany surprised Tokyo by signing a nonaggression
pact with the Soviets in August 1939, Japanese
strategists were compelled to reevaluate their long-term
objectives. Japan was not strong enough to defeat the Soviet
Union alone, as a small but bitter border war along
the Siberian frontier near Manchukuo had amply demonstrated.
So the Japanese began to shift their gaze southward
to the vast resources of Southeast Asia—the oil of
the Dutch East Indies, the rubber and tin of Malaya, and
the rice of Burma and Indochina.
A move southward, of course, would risk war with the
European colonial powers and the United States. Japan’s
attack on China in the summer of 1937 had already
aroused strong criticism abroad, particularly from the
United States, where President Franklin D. Roosevelt
threatened to “quarantine” the aggressors after Japanese
military units bombed an American naval ship operating
in China. Public fear of involvement forced the president
to draw back, but when Japan suddenly demanded the
right to occupy airfields and exploit economic resources
in French Indochina in the summer of 1940, the United
States warned the Japanese that it would impose economic
sanctions unless Japan withdrew from the area and
returned to its borders of 1931.
Tokyo viewed the U.S. threat of retaliation as an obstacle
to its long-term objectives. Japan badly needed liquid
fuel and scrap iron from the United States. Should
they be cut off, Japan would have to find them elsewhere.
The Japanese were thus caught in a vise. To obtain guaranteed
access to the natural resources that were necessary
to fuel the Japanese military machine, Japan must risk being
cut off from its current source of the raw materials that
would be needed in case of a conflict. After much debate,
the Japanese decided to launch a surprise attack on U.S.
and European colonies in Southeast Asia in the hope of
a quick victory that would evict the United States from
the region.