That is a worry: under Vladimir Putin Russia has proved itself an unreliable supplier, cutting gas to countries such as Ukraine and Belarus that have incurred the ire of the Kremlin.

• 令人担忧的是：普京执掌俄罗斯期间，已经向世人证明了其作为供应国的不可靠性，只要惹恼了克林姆林宫，燃气供应就会被切断，正像其对待乌克兰和白俄罗斯一样。