中国逮捕第二名加拿大人，外交争端升级
Second Canadian arrested in China, escalating diplomatic feud
The New York Times, December 12, 2018
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ChinaFile, December 12, 2018
美国国会通过《西藏旅行对等法》(U.S. Senate passes Reciprocal Access to Tibet Act in response to travel limitations to the region)
Radio Free Asia, December 12, 2018
China “expanding” persecution of religious believers: U.S. ambassador
Radio Free Asia, December 12, 2018