Erm, I couldn't choose 8, sorry.
I chose 12, so that they're distributed evenly across the country.
Russia's pretty large, you know.
These are Barnaul, Vladivostok, Yekaterinburg, Novosibirsk, Petropavlovsk-Kamchatsky, Ryazan, Samara, Ulyanovsk, Engels, Chkalovsk and Yaroslavl.
They are all pretty the same in size so it's up to you to choose.
In my opinion, it's too few to have only 8 airbases for large countries like Russia, the US or China in IC.
I agree they are too few, but I think that in order to make nuclear war meaningful, this is necessary. Otherwise, AI and player would nuke the entire globe. With 8 airbases, I think MAD will be still possible, but I will be able to create a chance for the player to prevent nuclear disaster.