Dad battles for son taken to Brazil four years ago

Story here. Excerpt:

'It is like a nightmare for David Goldman, except that when he wakes up, it is still there. His son Sean, abducted to Brazil by the boy’s mother four years ago, remains almost in sight but always out of reach, in defiance of the laws of two nations and the world.
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Goldman thought his marriage was solid and his wife happy. But when she got to Brazil, his wife called him and said she was not returning to the United States. And, she said, she was keeping Sean with her. What’s more, Goldman says, Bruna told him that if he ever wanted to see Sean again, he would have to assign sole custody of the boy to her.

Goldman had been traveling to Brazil for every court hearing that ruled against him over the years. He went again, only to discover that his late wife’s Brazilian husband had filed a petition with local family courts to remove Goldman’s name from Sean’s birth records and replace it with his own.
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“[That] would exclude me from ever even being my son’s father,” Goldman told Vieira. “So far, the Brazilian judicial system is letting him do this.”