Here is the thing, Russia is now realizing that it is actually in a war with the West to a certain degree. This is not a SMO anywhere. So if you are asking why don't they blow up Ukrainian targets, well, they are now getting serious. This is why you are seeing an increase in bombardments in so many different areas. The Ukrainians can only react to Russia and that is a losing battle. Russia is setting the stage for battle, Ukraine just reacts - this is understandable given the severe equipment and manpower shortage of Ukraine.
As for US airpower hurting Russia, well, once again, this is not the way to win wars. It can destroy countries but the war is not won this way. The West and ISIS destroyed much of Syria but was the war won, as in, removal of Assad? The answer is no.
Russia is working on the S-550: a threat to everything that flies, including aircraft coming from space. Two years ago Putin announced development of the system
bulgarianmilitary.com
"The current consensus is that the S-550 will be a mobile system focusing on strategic defense. It is expected to shield against intercontinental ballistic missiles [ICBMs] that ascend high into space before unleashing nuclear destruction at velocities up to twenty times the speed of sound.
Russian insiders have been hinting at a
“space attack” or
“space defense” function, which could encompass tasks such as intercepting low-Earth orbit spacecraft like the US military’s X-37B. This is apart from kinetic anti-satellite missions. Intriguingly, no naval variant is planned, unlike the S-500.
The S-500, already applauded for its advanced ballistic missile defense [BMD] capabilities, uses the 77N6-N series missile. This missile, according to US intelligence, is competent against medium-range and some intercontinental ballistic missiles [ICBMs]."
The U.S. is having trouble defending against low-flying drones and cruise missiles after years of the Pentagon focusing on longer-range threats.
www.nbcnews.com
Yeah that old drone got through, so what? There are big areas to cover and Ukraine is using a lot of drones now. Some do get through. No system is going to stop all incoming attacks, not even the Patriot systems. Ask Saudi Arabia how they Patriots did against the Houthi attacks.
From the article: Drones and missiles can be detected by radar, but they tend to have small radar signatures and can fly close to the ground, sharply reducing the detection range and thus opportunities to fire on them from far away. They also are easy to maneuver, allowing them to hit the coverage gaps between radars and Patriot batteries. And drones and cruise missiles are often cheaper than a $2 million or $3 million Patriot missile, meaning the supply of Patriots can be depleted much faster than the bevy of drones launching attacks.
I will say that US airpower is superior to Russia's so that is why Russia has spent many decades improving their air defenses. Different approach to warfare.