I have a cotton handkerchief in pale tones of brown and green. It is covered in indigo-coloured text in several languages and scripts. I received it as a present from a delegate at a women’s history conference in Japan some years ago. As she presented me with the handkerchief, my benefactor explained that the text was Article 9 of the Constitution of Japan, which renounces belligerence. She explained that she belonged to a group who had made the handkerchiefs because they wanted the pacifist principles of Article 9 to spread around the world.