What is the ruling on a woman marrying a man who claimed religious asylum to obtain citizenship, and what are the implications for the wife after she learns the truth about his religious asylum claim?

Changing one's religion in official documents and claiming religious asylum constitute disbelief (kufr) and apostasy from Islam. The claim of duress is false, as he went of his own free will. The husband must repent by declaring his Islam, tearing up the papers of disbelief, and leaving the country. You must leave the country with your children and not allow him to approach you until he cancels the asylum or leaves the country and registers his religion as Islam, while adhering to its rituals. If he repents before the end of the 'iddah (waiting period), the marriage remains valid. If the 'iddah ends, a separation occurs. If he repents after the 'iddah ends, he cannot return to you except with a new marriage contract.