Lincoln promised that he would not reprovision the fort but, in typical Lincoln fashion, lied.
When did he make this promise? In the first inaugural, he said, ""There need be no blood-shed or violence, and there shall be none unless it be forced upon the national authority. The power confided to me will be used to hold, occupy, and possess the property and places belonging to the government, and to collect the duties and imposts; but beyond what may be necessary for these objects, there will be no invasion, no using of force against or among the people anywhere."
It was the south that resorted to violence, "having fired on bread."
It's many times the case that a deeper, scholarly reading of history overrides eventual assumptions commonly held by many. You just have to be up on this stuff.
This from the guy who apparently doesn't know the difference between a tariff and an excise tax. Read some of the Declarations of Causes. Read Alexander Stephens' Georgia speech and his "cornerstone" speech.