A poster usually has a catchy picture. in this case the picture shud be of a Earth with a human hand making a shield around it to protect it from monsters of nuclear war. show the monster with red eyes and fangs. it should have a tag line or a catchy slogan
1) Avoid all bloodshed
nobody wants their near ones dead
2)harness nuclear power for creation , not destruction
3) the race to amass nuclear power will lead to annihilation
- A poster that is colourful with bold lettering and clear message is an effective poster