Henrik
I'm sorry, Henrik. But, there's a lot of history behind this particular fight. A lot happened during the last 1000 years, and I was only around for some of it. But, they haven't always fought like this, and they won't always.
Klaus loves Elijah, but he doesn't want to see him get hurt again. He only ever wanted to protect them all. But, he doesn't always go about it the right way. Which is what frustrate your siblings.