HANOI (AFP) – A Vietnamese student was sentenced yesterday to six years in prison for anti-state propaganda, as the government tightens its grip on critics before an Asia-Pacific summit next month. Scores of dissidents are behind bars in the communist state, and rights groups say 2017 has been a particularly harsh year for activists. Phan Kim Khanh, 24, was sentenced for anti-state activities, his lawyer said, blasting the trial as “biased”. “The court decided to put him in jail for six years and another four years on probation afterwards,” Ha Huy Son said. Khanh was arrested in March during his final year of an international studies degree at Thai Nguyen University. He reportedly ran blogs and YouTube channels where he voiced opinions on corruption and politics.