An iconic 1960s slogan which delivered in advertisements, bill hoardings and throughout the media by an ex-Beatle and his artist wife to herald the coming of the new decade in late 1969. Lennon and Yoko later recorded a Christmas single using the same slogan. The meaning behind "War is over if you want it" is that the only thing needed for all wars to end is for everyone to stop participating in them. Whilst in practice this is a massively oversimplistic plan, it does bring home the notion that the only things causing some of the world's worst human suffering are humans themselves. A great peacenik design, as well as a great 1960s or baby boomer gift.