Trinh Xuan Thanh, the former head of PetroVietnam Construction (PVC), is believed to have been abducted from Germany.
Anniversary of 1950 diplomatic relations coincides with 1974 Chinese seizure of islands from Vietnam.
Nguyen Ngoc Gia, released from prison on December 27, 2017, describes his treatment in jail but vows to keep on writing.
Amid arrest campaign, Hanoi releases a white paper touting progress in human rights that is quickly dismissed by a former political prisoner.
Nguyen Van Oi must now serve his full term after allegedly violating the terms of his probation after an earlier conviction.
Police presented no papers ordering Doan Van Dien's arrest and still have him in custody after more than a month.
The procuracy asks for a life sentence for Thanh and 14-15 years for Thang.
Signatories say a farmer who shot company workers clearing his crops was repeatedly provoked.
One, former PetroVietnam Construction chairman Trinh Xuan Thanh, faces a possible death sentence if convicted.
Vu Hung was present at a teachers' lunch meeting shut down by police and was beaten in detention, his wife says.
Phan Van Anh Vu is flown to Hanoi and taken into custody on charges of revealing state secrets.
Local authorities had recommended the removal of a senior priest who protested government seizure of land claimed by his church.
Phan Van Anh Vu, a former intelligence officer, is wanted for ‘disclosing state secrets.’