All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
If you had conditioned this on your husband before the marriage contract took place and he agreed to this condition, then he is obliged to do one of the following two matters:
1- Fulfil his promise unless he has a sound reason for migrating from that country and returning to his country, like fearing to apostate from his religion or start doubting his religion and the like.
2- Divorce you.
For more benefit, please refer to Fataawa 85308, 83157 and 84565.
However, if you had not conditioned this on him before the marriage contract took place, then you are obliged to obey him and move with him wherever he wants.
Allaah Knows best.