Are the statements issued by the father, "You are divorced" or "I swear by divorce you will not return with me," considered a divorce? How many divorces are counted in this case? Does divorce require intention? Is a son considered disobedient if he defends his mother? And what is the way to deal with a father who gets angry quickly?

It is advisable to alert your father to the seriousness of uttering divorces (talaq) and the necessity of his asking trustworthy scholars about the divorce instances he has pronounced. They can then inquire from him about the truth of what he said, his intention, and his awareness of the situation, so they can provide him with the appropriate answer. This is keeping in mind that an explicit utterance of divorce takes effect without the need for intention, and it takes effect even from one who is jesting. The divorce of an angry person also takes effect, unless he has lost his sanity. Your duty is to honor your father and not to mistreat him. If he aggresses against your mother, you may intervene to prevent his aggression, while observing proper decorum.