International cooperation needed to combat dangerous material, Cao Yin reports in Beijing.

Ekrem Usman recalled in subdued tones how members of his terror cell were whipped into a frenzy to carry out a violent attack last year in Lukqun, the Xinjiang Uygur autonomous region.

"Before the attack, we watched some videos that asked us to launch jihad," said the cell's leader, who was sentenced to 25 years in prison in September for membership in a terror organization, homicide and arson.