Michael Biggs, lecturer in sociology, University of Oxford
Robert Barnett, director of the Modern Tibet Studies Program, Columbia University
Bhuchung Tsering, vice president for special programs, International Campaign for Tibet
More than 100 Tibetans have set themselves on fire since 2009 to protest Chinese rule, according to Tibetan advocacy groups. Self-immolations in Tunisia and Vietnam also gained international attention, but the motives and effectiveness of the practice are widely debated.