A "cat" is usually the dominant animal compared to the"mouse", who despite not able to conquer the cat and defeat him, the mouse is still able to escape successfully. This is depicted from the bunting behavior of the cat, which often appears to play with it's “prey” on the current capture.The instinct is to make the prey weak without harming or endangering itself.
In this illustration, the cat now has turned the tables and is going after the cats (China, Japan, USA). The fact that the mouse has a picture of a cat on the bomb (Weapon of Mouse Destruction) shows that the mouse finally reached the cats’ level but also more powerful and enough to “take them down”. Also, the cats seem to be mocking the mouse that it’s still not strong enough but