President Putin understands very well the cancer that's eating away at Western countries. He is warning them based on Russia's experience in the past.
Can you imagine a Western leader giving such a speech?
Cleverly selective and exaggerational. With a bit of deflective historic culpability thrown in.
For domestic consumption he is Invoking the dastardly western bogeyman as a threat to Mother Russia. This ties in neatly with painting any domestic opposition voices as "foreign agents" and criminalising them.
At the same time he is provoking and inflaming reactionaries abroad who provide Moscow with useful idiots, in a continuation of what Moscow used to do in the Cold War with the adherents of peaceful international socialism in trying to create polarising schisms in western society and violent dissent.
Edited to add:
It is interesting to see that after I posted some thoughtful and thought provoking reporting on the state of Muscovite Russia from the Economist, we have pretty much immediately had some deflectory "whatabout-ist" posts.