Weren't there Russian personnel at the last airbase we bombed? I don't think that would stop it but what they did was scatter their planes making it harder to hit them all in one place.
International Level: Specialist / Political Participation: 36 3.6%
Yes, we can still attack but I don't think we will. Since it is Russian leased we'll leave it alone. That said, anywhere else they have planes is free game and keeping them in one place makes them less effective. The reason is they aren't in optimum positions throughout the country so they spend more fuel getting to a target, have less time to loiter and attack over the target and then have to spend more fuel getting back to base. All the while they are susceptible to anti-aircraft fire from multiple different platforms.