Putin is doing this for show - I rather doubt that the bombers are even loaded with deliverable weapons. It is his only way of saving face after not shooting down any of our slow-moving cruise missiles with the “vaunted” S-400 AA missile system that they have in Syria.
FYI, I’d love to see how much new underwear the Russkies would need if we started flying BUFFs 30-odd miles off of their coast. Methinks that the Soviet, err, Russian flights would stop pretty soon.
We do the same thing.
Us old folks remember the U-2 incident and Gary Powers.