What should a wife do whose husband has been impotent for two years, and they have children?

If a woman can be patient with her husband's condition without falling into temptation (fitna) or neglecting his rights, then her remaining with him is more preferable. However, if she fears falling into the unlawful, then it is more appropriate for her to seek a divorce, because the soundness of one's religion takes precedence. She is permitted to seek a divorce due to her husband's inability to engage in marital intimacy.