She is making a gigantic decision that will affect all their lives for good.
It's not actually that gigantic if, as will happen, everyone stays in the same country until the children are grown. The parents will just live in different households, but their family, friends, schools etc will remain the same.
Which, presumably, they would have anyway even if she hadn't made this decision...
The far more gigantic change is for parents to split AND children to move countries. No? Do you have an argument to refute that?
You always talk about power, who’s got the power. She does.
(Who "always" talks about power? You're the dh aren't you? Lol)
She has the power to end her marriage, that's all.
He has the power to stay where the kids grew up so far, or leave them there.
She can’t decide now that her husband needs to stay where he’s unhappy
But she hasn't decided that though.
She's decided to end the marriage.
He can decide if he wants to stay where the kids are, or move somewhere else without them.
It's not brain surgery. Again, how the dad feels doesn't matter.
You waffling about diplomats' children has nothing to do with anything. Courts don't care what your random diplomat friends do.
The best interests of children are very rarely that they should follow their ft-working father to a country that they didn't grow up in, leaving their primary carer mother behind. You don't have to like that but it remains the truth.
Dad needs to dry his eyes and get on with it. His feelings literally do not matter in the slightest.