BEIJING _ In recent weeks, authorities have ramped up pressure on protesters in Hong Kong, calling their demonstrations "terrorism" and hinting at Chinese military intervention.
With Chinese troops hovering just outside Hong Kong, U.S. national security advisor John Bolton has warned Beijing to avoid a new Tiananmen Square moment, a provocative reference to the massacre of Beijing protesters 30 years ago.
What are the tough tactics and could they backfire, locking authorities and protesters in a cycle of violence?
