We are attacking Ridderkirk because I forgot my Mechs keys on my nightstand in my apartment before you took it.
In all seriousness. I believe everyone is aware of the "deal" we have struck. Wolf will move through CJF territory to rejoin you in our fight against Inner Sphere. For every planet we take from CJF, CJF will take one ours back in return, no matter which planet it is, the one that pops up for CJF to attack, they take.
And so it happened with Ridderkirk.
But, as our awesome planet-seeking-algorithm, or whatever it is, has chosen like 9 times in a row Ridderkirk for us to attack, and will continue to do so, until we re-take it. And at this moment, I call the statement, that this algorithm is biased for clans for moving towards Terra, complete BS(pardon my french).
So I think a second deal was made, that we retake Ridderkirk, just so we might get another planet in the downward direction, meaning we would owe CJF two planets to retake.
I am a bit hazy on this last part, but I believe it to be so. We Wolves, honor the deals that we make, and will repay you for the lost planets. Or hope that this algorithm bugs out as it did for you, when you took Tamar.