As one of the founders of Kibbutz Hamadia he lived there for 16 years and studied contemporary history and economics.
According to a Jerusalem Post journalist who worked with him, his joint editorship with Erwin Frenkel in 1975-1989 "provided a contrast in styles and personalities – Frenkel’s cool, almost unflappable detachment and Rath’s excitable, emotional character, quick to explode in anger and just as quick to forgive, forget and embrace.
"[4] After leaving The Jerusalem Post in 1989, he worked as a freelance writer, taught at the University of Potsdam and was news editor of the on-line journal Partners for Peace.
He was a founding member of the Next Century Foundation, a second-track group working for peace and reconciliation.
In 2005, Rath received a Special Prize in the British House of Lords in the shape of an olive tree from the International Council for Press and Broadcasting in recognition of his achievement and tireless work for rapprochement and peace.