Teiichi Suzuki
A November 1941 document written by Lt. Gen. Teiichi Suzuki, the Imperial Japanese cabinet member in charge of allocating resources for the army, navy and civilians, concluded that Japan, which was already at war in China, would be able to still wage war against the United States, Britain and the Netherlands.
Some estimates described in the report (apparently padded) allowed Suzuki to convince undecided leaders that Japan could secure the logistical supplies needed to wage this war.