You can't be a citizen of the world when you share parenting duties with your ex!

Brad Pitt is doing everything he can to spend more time with his six children, and that includes tailoring his work commitments this summer around his brood's lives in their new home base of Los Angeles. Putting down roots in the City of Angels hasn't gone over well with Angie, though!

"He chose a project that films in Los Angeles. Brad wants certain provisions in a custody agreement that guarantee custodial time with all six kids," a source dished to Us Weekly.

Although the Malificent actress purchased a home near the Oscar winner's Los Feliz bachelor pad out of convenience, she's none too happy that she can't jet off to exotic locales on a moment's notice with the kids.

"[Angelina] has been very hesitant to agree to Brad’s terms because she does resent him for essentially forcing her to settle down in Los Angeles with the kids. Brad and Angie are continuing to try to work out their divorce settlement. There hasn’t even been a settled agreement drafted by either side, which reveals how at odds they continue to be," the source added.

Papa Pitt's obligations on the West Coast are proving to be a challenge for his blossoming romance with MIT professor girlfriend Neri Oxman, too.

"Brad and Neri are still very much in each other’s lives, although not as much as he would like. She will come out to L.A. to visit him this summer as he is filming, but she has a life of her own in Boston," the insider revealed.

Breaking up is hard to do!