She recalled that Russia is a nuclear power, and if you insist that the Russians need to be expelled from Crimea, the conflict in Ukraine "will continue forever."

“The question is what goals are realistic... The Russians have kept their Black Sea Fleet in Crimea for decades, they will not give it up.

Is it necessary to sacrifice tens of thousands, maybe hundreds of thousands of lives for a completely unrealistic goal?

Wagenknecht said in an interview with the German edition of t-online.

Earlier, President of Ukraine Volodymyr Zelensky said that Kyiv would “take away” Crimea from Russia “by any means”. 

Former German Chancellor Gerhard Schroeder replied that the threats of the Ukrainian leader to return Crimea by military means are meaningless.

Crimea became a Russian region after a referendum held there in March 2014, in which the majority of residents voted for reunification with Russia.