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.
美国国务卿约翰•克里(John Kerry)威胁要对俄罗斯实施进一步制裁，除非俄停止支持东乌克兰的分裂主义者。他承认，释放一周前被劫为人质的七名国际观察人士是一个进步。
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