Ending slavery was an economic sanction, one which was hoped would shut things down in the South.
It didn't matter. Lincoln had no authority over the states in secession, and those were the states to which the proclamation applied. ...governments derive their just powers from the consent of the governed... and that consent had been revoked.
Maybe, maybe not. But he certainly had authority to deal with areas in a state of insurrection. And he used that authority.
Not by any definition I'm aware of.
Ending slavery was an economic sanction, one which was hoped would shut things down in the South.
True.
It didn't matter. Lincoln had no authority over the states in secession, and those were the states to which the proclamation applied.
As President of the United States - all the states, those rebelling and those not - he certainly did.