I am sorry about this
I have tested several scenarios -- sometimes it allows you to Liberate/request to liberate cities in vassal master relationship. But not in this case. So here is what you can do, please:
1. Replay from Arabia, deleting all the files you have generated during this turn.
2. Decline Capitulation.
3. Play your turn normally until Indonesia, while expecting, during your next turn, to find yourself in peace with me (your Afghan units will be booted to Iran), all your cities back to you empty, peaceful vassal offer from me, peace with USA, and war from Russians and Latinos.
4a. As Indonesia offer peace to INDIA.
4b AFTER that demand your cities from Australia. (with another automatic peace offer)
4c. AFTER this demand your cities from UN.
4d. Proceed to Pakistan and demand your cities from India.
During my turn I will peacefully vassalize to you. Unfortunately instead of autopeace this means auto war with Russians and Lationos. Which means I cannot laugh at academia's stack trying to get back to Madagascar after being booted during autopeace . I was counting alot that he wont be able to attack me this turn after you accept capitulation. So all this is bad for me and some extra work for you, sorry!
In a meantime I would need to sort things out with USA -- civaddicted please do not play your turn until I explain you what to do.