Dunno about that, 20 m jets destroyed on one of your nation mates doesn't recover in a few cashing turns, especially at that land.
Hmm, at about 8.4K land, you're making in the twenties for base income per turn. Cash and its around 40-41m per turn. Suppose I destroy 300-400K jets in one op with the amount of jets you have atm (since it does decrease over time). At 800 a pop (for easy calcs), that's roughly 240m of damage per turn. More like you have to cash 6 to undo the damage of just 1. I'd go as far as saying the ops dug into your stock quite a bit.
Oh well, I dunno what's gonna happen, if any FA is going on, or whatever, but I may as well do something for the remainder of the set.