German officials have said they expect Russia will be ready and willing to attack NATO in 2029.
although, to be honest, I could not find the alleged claim in the linked article; it seems to come from a recent tweet by the German Foreign Office. Also:
Analysts also think that a possible armistice in Ukraine, which the U.S. is pushing for this week, could free up time and resources for Russia to prepare a move against NATO members in Europe.
Why do you think you're right?
The WSJ has a long write-up on Germany’s Secret Plan for War With Russia. It includes a claim:
although, to be honest, I could not find the alleged claim in the linked article; it seems to come from a recent tweet by the German Foreign Office. Also:
Why might you be wrong?
As before.