Could stronger Chinese and Southeast Asian opposition help civilian leaders regain control of Japan's armed forces?
Short answerGreater influence for Mitsumasa Yonai's antiwar faction could help, but much of the leadership had accepted war as a fatalistic last gamble.
NotesMitsumasa Yonai and the antiwar faction he represented are considered more decisive than Konoe in this question. Greater influence for that faction could provide an alternative course. Many Japanese leaders, however, saw defeat as inevitable because Japan was already losing the industrial and cultural contest in peacetime. War seemed to offer a remaining chance even when they did not really expect to win it. That fatalistic reasoning makes a stronger external opposition insufficient by itself to reverse their course.