JRS has been campaigning against landmines since 1990 and cluster munitions since 2008. JRS was one of the founding organizations of the Thailand Campaign to Band Landmines and a member of the International Campaign to Ban Landmines. In 1997 this campaign won the Nobel Peace Prize and Tun Channareth with other JRS advocates to ban landmines accepted the award.
JRS has played a leading role in the campaign and contributed research on Cambodia, Thailand, and Indonesia for the 'Landmine Monitor'. In addition JRS continues to support landmine survivors in countries such as Bosnia, Cambodia, Thailand, and Kosovo, and actively raises awareness of the issue in these and other landmine-affected countries.