Violence against children is a deal breaker for you.

Your husband has started smacking the 2yo because "they deserved it" (once for kicking, once for yelling in the babies ear, and the second time was a whack across the back of the head, which was heard from the next room).

He was always a very calm person, but doesnt seem to cope with the toddler being a pretty normal toddler, and is very 'shouty' for the smallest things, and punishes immediately (ie takes away a toy with zero warning, rather than first saying 'thats a very noisy toy, if you arent quieter with it, I will put it away')

What would you do?

Leave?

Insist on parenting classes and anger management?

Or just hope that he improves, and continue to parent in your own way?