[greedo]

The Ukrainian air defense was not even close to modern. It consisted largely of older S-300s, some Tor, Buk and Tunguska systems that were leftovers from the fall of the USSR. They had some even older systems (S-75, S-125, S-200). So this is largely 30+ years old, and not very well maintained.

[sudosysgen]

S-300 is not really comparable in terms of capability to S-75 and S-125. There is a quantum leap between decentralized networked mobile IADS with a combination of radar types and missile types and Iraq's S-125 systems.

S-300 is still a very capable system today and 1990s' S-300 systems are only really a generation behind modern systems. They're about as recent as the systems on Ticonderogas and Arleigh Burkes that are very much still in service today.

[greedo]

Yeah, I wasn't really trying to compare S-300 to the older systems. Just that they were some of the systems Ukraine had or have brought back into service after the invasion.

S-300 (and S-400 which is really enhanced S-300) in their most modern configurations are incredibly lethal systems against 4th Gen aircraft that aren't accompanied by extensive SEAD/DEAD resources and jamming. But Ukraine has 1st generation S-300P, from the 80s. These might have been upgraded to S-300PT-1, giving them cold launch with the newer 5V55KD missiles.

[cpursley]

Apparently the S-300s were maintained enough to spook the Russian AF. Also, there’s a variety of Western systems now.

[greedo]

I wouldn't be surprised if they've completely depleted their inventory of S-300 missiles (5V55KD). The Texeira leaks seemed to indicate they would run out by Summer/Fall of 2023, though with the supply of IRIS/Patriot/NASAMs etc, they might have reserved some of them.