If he really wanted that then he went about it in a most unusual manner. Telling the South exactly what his intentions were, allowing them the choice to accept status quo or start a war. Had he wanted war I think he would have been more obvious about it. Move the forces in without prior warning. Intend to reinforce regardless instead of peacefully resupply.
Sure he did.
But that was the brilliance of it. For now when he called for 75,000 volunteers, they came a running, so outraged, that he would have a hard time keeping them in Washington!
I am not going to shortchange Lincoln's political savvy here. You don't have too either.