On the one year anniversary of the arrest of human rights lawyer Nguyễn Văn Đài, who has been held incommunicado in pre-trial detention since 16 December 2015, Amnesty International calls for the immediate and unconditional release of three named activists, held solely for peacefully exercising their right to freedom of expression and association, and for the release of all other prisoners of conscience in Viet Nam, whom remain at risk of torture and other ill-treatment.