It has also been reported on the History Channel that in the last months of WW2 that Nazi Germany was shipping radioactive material to Japan. The Japanese were planning a "dirty bomb" strike against a US city on the west coast, likely San Francisco, in September 1945. One u-boat (destined for Japan) was captured in May 1945 by the US Navy off the American east coast with the radioactive material on board.
Thanks. I knew Germany had an atomic bomb program but didn't know
they were enabling Japan.