Returning to home country with children without wife's approval

We are Muslims and I'm married 8 years ago and I have two children; a 5-year old daughter and a 2-year old son. We are still living together.

Due to my financial situation, I decided to go back to my home country but my wife's family is not allowing her to leave or take the children with me. Her family keeps on interfering in my family's life and turning her against me.

Going back to the country means I want to give my children a good education, a professional life, and a better future.

In this situation, what I can do?

I can't leave my family here and go without my children.