On the photo is not F-22, but F-35. It have one engine.

Because it is cheaper than smuggle, which is expensive and unreliable. Iranian choose to produce F-5 jet is logical. F-5E/F is a simple plane compared to F-4 or F-14. They produce whole J85 engine in form of Owj, for which they said is upgraded engine. They already produce bodies and wings to repair damaged ones and subsystems for spare parts. Finally they come to new build fully domestic jet. There is a good question, why they change the name from Azaraksh to Kowsar, when it is practically the same jet.

I think they were waiting with production of new build F-5s, because they are waiting for new domestic electronics. They build some Saeqeh twin tail jets from heavily damaged original F-5 jets, because they still install original F-5 electronisc inside or their own reversed enineered copies. In this new new build F-5 Iran install iranian produced K-36 ejection seats, maybe Russia give them lycence to produce them. Iran also show iranian produced new electronics for it. It got new multirole radar, which could be developped from Russian export Kopyo radar for MiG-21 jets and new FCS and navigation blocks and data link. As they are describing it in media, could be wrong, it sounds very similar to SVP-24, which work fine in Syria. Could be, that Iran got some technological help from Russia or China in developing its new modern electronics. Iran also show their new targeting pod on their IRGC Su-22 jets and new weapons. For Iran this new build F-5 Kowsar is very important as they receive new build fighter plane and is fully domestically build, what means it is immune on any sanctions. Although not the best fighter plane it still could serve well inside Iranian IADS and is still on the level of Indian Tejas or Pakistani JF-17.

AFAIK Russia will this year start building the second runway in Simferopol airport.

They were not relatively small buildings – it was huge complex made from reinforced concrete several stories tall. It would certainly take several dozens of strikes to reduce three 6-storey concrete monoliths to pulverised ground-level high ruins. Look at the size of the buildings compared to the vehicles parked in front.

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The six floor building is still intact and in satelitte pictire it have far longer shadow, than objects, which were hit and they have three flors at best. They are not reinforced concrete buildings, but usual buildings with concrete sceleton and filled with lighter material. It could be seen, that upper flors simply fall down, when those weak concrete pylons were destroyed in explosion. They are not heavy fortified objects and there were not 70+ missiles hits. This damage is done by few missiles.

Russian MoD show wreckages of shot down NATO missiles. Holes from air defense missiles warhead fragments could be clearly seen.

SAA managed to liberate enough territory in Damascus area from terrorists, that they could rebuild their air defense network. A year or two ago, this would be impossible for SAA to shot down israeli warplanes.

On the other hand Kurds also shot down Turkish T-129 combat helicopter in Afrin area. Turkey confirm both pilots are dead.

In Yemen Houtis hit saudi F-15 with SAM over Sanaa.

AFAIK domestic Su-30SM use AL-31FM1 engines with TVC while export MKI/MKM/MKA use standard AL-31F with TVC.