乌克兰危机虽推动俄中接近 但戒心难消除 (Ukraine crisis draws Russia and China closer, but hard to eliminate distrust)
Voice of America, April 18, 2014
http://www.voachinese.com/content/russia-china-balance-20140418/1896174.html
中国人走进拉美：新伙伴，老问题 (China expands influence in South America: new friends, old problems)
Deutsche Welle, April 18, 2014
http://dw.de/p/1Bkjp
