Franklin Roosevelt states that World War II will become bigger and tougher in upcoming months

The transcript discusses the collaboration and communication among allied forces, including Russian and Chinese allies, in prosecuting the war with determination and success. It highlights the fulfillment of past plans and the creation of new ones, while acknowledging the increasing challenges of the war. The importance of continuous effort and resource management is emphasized, along with a call to action for public contribution through war bonds to support the war effort.

What does the speaker mean by stating that 'this wall will become bigger and tougher'?

How does the speaker suggest individuals can contribute to the war effort?