Is it permissible for a brother to leave his foreign Catholic wife, who has no desire to embrace Islam, in order to marry a Muslim woman in an Arab country without informing her, while she wishes for him to stay with her?

The wife's adherence to her religion does not prevent her from remaining married to her husband. It is permissible to try to convince the husband not to divorce her, while leveraging her desire to stay as an opportunity to invite her to Islam with kindness, explaining the merits of Islam and the falsehoods of Christianity. If the husband wishes to marry another Muslim woman, he is not obliged to inform his first wife, and he must be just between them. Marriage to a chaste woman of the People of the Book is permissible in Islamic law, but it is preferable to marry a righteous Muslim woman.