Workers Of The Real World

Imperial Japan would have used nukes on the U.S. if they had developed them in time:

New evidence tracks Japan's efforts to create atomic plant (San Diego Union-Tribune June 1, 1997)

Imperial Japan did have biological WMDs:

Review of Japanese Biological Warfare and Unit 731

Unit 731: History and New Evidence

Pioneer of Biological Warfare, Japan (Unit 731)

UNIT 731

"Of Men and Mice"

by Thomas Antoniadis

"In 1989 an appalling discovery swept across Tokyo. A construction crew working st Shinjuku found beneath a pavement, a mbuttive cache of human remains. The horrific news spread quickly around Tokyo and the Japanese government decided to make a statement which would lead to the revelation of the most terrible secret of World War II. Some meters away from the construction site lay the wartime laboratory of Lieutenant General Shiro Ishii, father of Japan's top-secret biological warfare program; Unit 731.

Unit 731 was acquiring human guinea pigs from the Manchuria base to Tokyo. After the end of WWII, the bodies were disposed in a mbuttive grave and Unit 731' s activities remained Japan's most closely guarded secret..."

and two delivery systems:

USAF Museum - Japanese Balloon plants in WWII

The Transpacific Voyage Of the I-400 By Thomas O. Paine

For more on the decision to use nuclear weapons on Imperial Japan, see:

The Final Months of the War With Japan: Signals Intelligence, U.S. Invasion Planning, and the A-plant Decision

--Jerry Leslie