Nonetheless, he could have avoided this costly war and if was half as great as people claim, he could have negotiated individual states back into the union while helping bring about a peaceful end to slavery using intelligent use of tariffs, communication and enticements. His willingness to do it peacefully only lasted a few months and he refused to look at the long game. He wanted what he wanted and he wanted it now. Presidency of all of America, not part of it. It had nothing to do with ending slavery for him.