No. It doesn't matter how old the child is. Parents are supposed to act like adults. Acting like an adult means that you need to keep your cool, even if your teenager is acting like an ungrateful brat. That's what teenagers do. Their brains are flooded with hormones and they aren't done growing physically or mentally. Hitting your child teaches your child that hitting is an acceptable way of dealing with your problems. It is not okay.
Yes, it is still assault. Doesn't matter if he is his son.
Yes, you can keep you and your son's duel citizenship and still marry the father of your son in the UK.
No
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well by law, he is now a adult, so he can make his own decissions, but i do not think his father can no longer get custody because he is 18, but im not 100% sure
No, they have no control over a 21 year old son and are not responsible.
no
He has a four year old son and a one year old son
He has a four year old son and a one year old son
He has a four year old son and a one year old son
Just a little bit...
Yes, he has a 21 year old son called Stephen with his first wife.