The couple's divorce has gone from bad to worse in recent times with Jolie, 43, claiming Pitt, 54, is a 'deadbeat dad' for not paying child support.
But the star claims he loaned her millions after their marriage fell apart.
A source reveals: "It's no secret that Angie would like to get full custody of the children and move abroad. Although she has physical custody, she can't move without Brad's consent.
"Brad does not want to have to fly eight or nine hours each time he wants to see his children. He is trying to keep the status quo."
The pair are currently at loggerheads and Pitt is worried that with no resolution in site the 'Tomb Raider' star could leave America.
Other insiders claim that by going public Jolie is trying to force his hand over getting full custody of their kids.
Pitt's lawyers called Jolie's statement over child support 'unnecessary' and described it as a 'thinly veiled effort to manipulate media coverage' against their client.
The actor has been filming alongside Leonardo DiCaprio in Hollywood this week.
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