Via the BBC:
Two Russian families are united by a terrible event more than a decade ago. Their newborn daughters were accidentally mixed up in the maternity hospital and grew up with the "wrong" parents.
The two families meet regularly now. But the parents admit there is tension between them.
"It is difficult," concedes Naimat. "One family is Christian, the other is Muslim. We have different traditions. What I fear most is that the daughter I've raised will start going drinking in bars, that she will stop praying and working. I'm worried she will lose her religion."
"There is tension between the adults," says Yulia, "Naimat doesn't like some things that go on in our family, I don't like some things in their home. Both of us are used to life as it has been. Not as it is now. Now it is a nightmare."