Russians definitely increased their jamming activity after sanctions were imposed. The point I was making is that you do not need to make operation of Russian airplanes more difficult by jamming GPS/GLONASS signals, it is sufficient to deny access to maintenance and parts.
> The point I was making is that you do not need to make operation of Russian airplanes more difficult
I'm saying that "make flights difficult" is kinda-besides-the-point. The real goal is to impose some kind of return-pain to make the offender stop. Poetic symmetry is merely an ideal bonus.
In other words, it may be true that "the ideal retaliation is not very effective because of other circumstances", however that is not the same as "there is no need to retaliate at all."
