The question and the problem that arises from it, is based on "can" rather on "will". To put it bluntly, the riddle is, can our air bases be destroyed,from the ground before we can react. By whom and why,is irrelevant and the answer is yes. Historical evidence and the experience from the wars that Serbia fought, shows the need for the VTOL aircraft that will serve as a point based interceptor and with force multiplier capacity that can be achieved either trough quality or quantity.Greece and Turkey are both in NATO but that didn't helped in the case of Cyprus and multiple other incidents that those two had for decades. Our case is even worse, because we are surrounded with countries (except Romania) that have claims on our land for centuries and are not eager to drop those claims just like that.
Just 12 days ago we had an incident, where we had a breach of airspace and fighters were ordered to scramble. The object was located over the city of Valjevo and the response time was 10 minutes. However the MiG's that were scrambled were not able to find the intruder. GM 400 was the radar that detected the intrusion. Back in the 90'es, while I was on active duty, there was a map in the base HQ, that dealt with the strike missions from Bulgaria. The map had time-to-target estimates and all of them were under 5 minutes and that was from cold war era, so, 10 minutes response time, is not enough for us.
Rafale is a good airplane,but for a "normal" country. Problem is, that Serbia, for one reason or another is not a normal country. Also this is not some sort of Balkan's arms race, our MiG's air worthiness expires in 2030 and with the situation with Russia and the sanctions, they cannot be maintained, hence we need to find other solutions for protecting airspace.