The Backstreet Boys feel reminded of the Cold War with regard to the war in Ukraine. "I was born in 1971, and the 80s was the height of the Cold War," said band member Kevin Richardson of the German Press Agency in Berlin.

"I remember my youth pastor speaking at church about the possibility of nuclear war, the way I saw it in school, saw it on the news, and heard it on the radio." Then it was quiet for a long time about the topic.

"Now I'm a father and a husband and the fact that it's coming back to the surface is sad," said the 51-year-old. He hopes that politicians around the world are smart enough to know that there is no winner in a nuclear war. "We only have one planet," added bandmate Brian Littrell (47). You have to try to protect that and get along with each other.

The American boy band became world famous in the 1990s. She is currently touring Europe. The musicians released their first Christmas album last Friday.