'Heddwch' is the supporter magazine for CND Cymru, the Welsh Campaign for Nuclear Disarmament, published roughly quarterly from 1991 to the present day. It started as ‘Campaign Wales’ from 1985, following CND Cymru’s establishment as an independent campaigning network from 1981.

Each issue contains updates on progress of CND campaigns and activities Wales-wide, with many specific references to Welsh communities, activists and movements - an invaluable source material for exploring Wales' peace heritage of last 4 decades.