Images showed a fireball lighting up the night sky in Lugansk.

图片显示，一个火球照亮了卢甘斯克的夜空。

Referendums on joining Russia wrapped up earlier this week in Lugansk, Donetsk, Kherson and Zaporizhzhia.

本周早些时候，卢甘斯克、顿涅茨克、赫尔松和扎波罗热就加入俄罗斯的公投已经结束。

In eastern Ukraine heavy tanks believed to be operated by pro-Russian rebels were spotted near Lugansk.

在乌克兰东部的卢甘斯克附近，人们发现支持俄罗斯的反叛者使用了重型坦克。

Leaders of the self-proclaimed Lugansk People's Republic say a " fighter jet attack" is possibly behind the explosion.

自称为卢甘斯克人民共和国的领导人表示，爆炸可能是由战斗机袭击引起。

She added, and nothing justifies or excuses Russia's direct or indirect involvement in the fighting in Donetsk or Lugansk either.

她还指出，没有任何理由或借口使俄罗斯直接或间接参与顿涅茨克或卢甘斯克的战事。

United Nations Secretary-General Antonio Guterres has expressed his deep concern over Russia's decision on the status of Donetsk and Lugansk of Ukraine.

联合国秘书长安东尼奥·古特雷斯对俄罗斯关于乌克兰顿涅茨克和卢甘斯克地位的决定表示深切关注。

European Union leaders said Monday that the bloc will react with sanctions against those involved in Russia's recognition of eastern Ukraine's Lugansk and Donetsk regions as independent states.

欧盟领导人周一表示，将对参与俄罗斯承认乌克兰东部卢甘斯克和顿涅茨克地区为独立国家的人员进行制裁。