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PAF must get FC-31 by 2025 in a total nuber of 56. These will give us the best possible counter of rafale ,MKI and S-400 . When we talk about 4.5++ then the options available dont satisfy the above 3 factors altogether (RAFALE,MKI,S-400) . Rafale has very low RCS , lower than typhoon and SU-35/J-11D . So in bvr , RAFALE WOULD HAVE much edge over any avalable option . FC-31 has less RCS than any any fighter india intend to get . And it is a matter of time that by 2025-26 india will start recieving PAK-FA(FGFA) as the project is is boosted again now 2 months again. S-400 is a threat to 4.5++ platforms but less threat to 5th gen platform. We have only FC-31 as option by 2025 so we must get 3 squadrons . Seconf point i that we must also participate in TFX programs , remember that TFX has 3 versions , twin engine , delta and single . ACM's words that we must do effort ourselves so by participating in TFX , our enigneers will get to learn very much plus we will have production license and facility of TFX at home so we can also make good business. TFX sngle engine must be the focus of PAF to make in home and start replacing every F-16 and by 2040 we will have a fleet of 110 TFX , 56 FC-31 , 250 THUNDERS.