1 and if the enemy has a faster missile?
Doesn't matter... the faster it goes the straighter it flies the easier it is to intercept.
2 if he jam? how you guide your things to the missile? .....ofcourse i dont know if it used to make it like this but i suppose you can mark a target with a laser same way that usa laser (LAWS or so...) works ...from the ground ....and make the missile to recognize the own laser from others ....
How would he jam SAMs?
Launch an S-400 with a range of 400km and destroy his jamming aircraft.
What sort of jamming will jam a laser beam riding missile like SOSNA-R, or command guided TOR or Pantsir?
3 talking about kinetic projectile ....well here is something wrong....a kinetic projectile fall from speed and his penetrating power meanwhile he travel throught air .....so they cant intercept really far away....and destroy a missile at close to you ....isnt a good option ...... think that we can have a enemy missile closing to you ......you do that rheinmetal ....then let say enemy missile explode and launch few separate projectiles at very high speeds..... how you gonna stop them?
Use S-400 and destroy the aircraft carrying the missiles before they launch the missiles.
New model Pantsir can intercept targets about 40km from the launcher.
4 we talking here also about the price of every style of defence ....drones are cheap ....compared to missiles..... because of the fuel.....in practic really dont matter if you hit a missile far away or relatively close .....so why need a 400 km missile... when you can have a simple drone that do patrol ......
because a drone needs target detection sensors and weapons to intercept targets... it makes more sense to keep these drones inside missile containers inside a turret of a TOR system with radar and EO systems scanning for targets and then launching those drones at targets as they appear than have them flying around and around your base... those drones wont be cheaper than missiles because they will be burning fuel 24/7 and their onboard sensors wont be anywhere near as capable as the sensors on a TOR vehicle... and 64 drones flying around your base continuously would use up lots of fuel compared with 4 TOR launchers which could sit still with radars going plugged into the local power supply to run EO and radar continuously.