Racedo
A few problems with some of that:
1. As an EMP is indiscriminate then you are likely to frag either your own or your allies' satellites. Furthermore, the devastating effect of EMP could trigger a nuclear response. Therefore, I would say it is unlikely unless in 'Total War' and then an exo-atmospheric nuke will be joined by one of many going off in the atmosphere.
2. ASAT is also likely to frag and deny orbits and other satellites. Look at the recent US and Chinese ASAT shots - they caused a huge array of problems in Near Earth Orbit (NEO). Most ASAT capabilities are NEO capable only. Furthermore, the main satellites for UAV/RPAS control are in Geostationary Earth Orbit and that is a long way out. Most satellites get out there via a Hohmann transfer orbit and take several hours to get out there. All the satellite driver has to do is wait for the ASAT weapon to start the Hohmann transfer orbit manoeuvre and then move a few hundred metres to the left or right and the ASAT weapon sails right past unless EMP capable and then you're back to the same above - fragging every GEO satellite put there. Also, you need a serious space program to perform this manoeuvre.
3. Taking control or jamming the up-link. The up-link starts at the control cabin and goes via fibre-optic to the satellite uplink. All uplinks use parabolic antennae that are high-gain along a narrow azimuth with minimal sidelobes and so are hard to jam unless you happen to be in the sweet-spot that the actual antenna is positioned in. If you happen to be even 10 degrees outside the main beam then you will need 100s of times more energy and also a significant sized antenna - guess what? That capability would quickly go to the top of the strike target list!
4. Free Space Path Loss (FSPL) is massive over the distance involved in beyond line of sight control. So jamming is quite tricky and needs lots of effort. You'd better off spending time and effort trying to shoot them down rather than trying to jam/spoof the UAV/RPAS.
5. Laser use has the same problem. Aiming it accurately and tracking the target that is moving around. Again, probably better to throw up walls of lead with AAA - cheaper and likely to be more successful.
Just my two-penneth, but they aren't that easy a target as some would have you believe (unless you're a Georgian operator flying a Hermes 450 and doing nothing to react to the threat that you've been watching!).
LJ
Sometimes the most obvious way is best - Occam's Razor...