John Kerry, the US secretary of state, threatened Russia with further sanctions unless the country stopped backing separatists in eastern Ukraine as he acknowledged that the release of seven international observers taken hostage a week ago was a step forward.
美國國務卿約翰?克里(John Kerry)威脅要對俄羅斯實施進一步制裁，除非俄停止支持東烏克蘭的分裂主義者。他承認，釋放一周前被劫為人質的七名國際觀察人士是一個進步。
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