My narcissistic husband hates me, has mistress........?

We, 50ish have been together 30 and married 25 years with 3 kids age 15-18. We moved aboard and invest all et there with his friend. For years now, he act like he hate me and I am an awful person that he can't stand. I know I am not, and all my children love me and despise him from the way he treat me. He has no respect for me or my feeling. He has mistress and use prostitute, and tell me because he is not happy at home. My 2 children attend school is US, and so he told me to take all kids and live in US because he want to live alone. I am afraid he would not support me, and I still love him. Because he is immigrant and not live in US any more, if I divorce him I get nothing and the law can't force him to pay child support there. I work very hard for 30 years, but he control every penny. What should I do? Refuse to leave him to make sure he support my children, being tortured from his abusive behavior? Please help!!!