War is Hell. General Smedley Butler said it was "a racket." Clausewitz said:
"War is the continuation of politics by other means" [Brainy Quotes]
Mao Tse Dong said:
"Politics is war without bloodshed while war is politics with bloodshed." [brainyquotes also]
So it is only natural that some international tyrants see politics as a continuation of war by other means. The term "hybrid warfare" is a reformulation of an old truism to adapt to our modern information age. It's not that Vladimir Putin is pursuing a brilliant new strategy. It's that he's systematically pursuing principles of human manipulation, psi-ops and information warfare that are battle tested ones. 'Hybrid warfare' is international politics pursued with the ruthlessness of warfare. It is an effort to return the world to the Pre-World War I "great game" where coalitions were always temporary, often secret, and regularly betrayed for private, separate interest. It recognizes that we live in a world of fragile balances and asymmetrical power. It's not feasible to use atom bombs on our enemies or it would have already been done more than twice. We live downwind of each other.
And the Russians are [still] heavily involved in subverting our system.