According to tojo, what will happen to the us navy over the next few years?

Because the question is based in the context of the events of Pearl Harbor, I will answer in terms of what is predicted for the United States navy at that time. Tojo predicted that the United States navy would become stronger during the few years after the attack on Pearl Harbor. Because Japan's oil supply was running low and they new that the United States' navy would increase in both size and capability, it was not wise to continue.