DW News.
Just before his army invaded Ukraine, Russian President Vladimir Putin outlined his motivations in a speech.

His main argument: NATO's eastward expansion.

He blamed the extension of the military alliance ever closer to Russia’s borders and accused Western leaders of breaking alleged promises to never do so.

But experts disagree on whether that’s true.

Mirrored from https://www.youtube.com/watch?v=nVt-WXTLIZM