I'd wait and see whether Trump starts a civil war before celebrating his peacenik credentials.
Yeah, like he could divert all those staffed military bases aboard, pull all the troops back into the home country, somehow manage to get the hierarchy to consent to invading states. Consider poppycock nightmares though couldn't come to fruition regardless. Trump never could get a proper cult of personality. A revolving door even within his own freaking Cabinet is a sign of a lack of ability to create compliance that proper dictators were able to obtain and then retain.
The original Civil War was a state-based affair. No one is going to cut their nose off to spite their face. Open borders within the lower 48 and Hawaii, and a populace that has no capability of engaging in modern warfare at all anywhere in the nation. And millions of grants from the federal government.
In addition, law enforcement of the states is very much decentralized and are bound to their municipality's orders, not Donald Trump. Trump is no Maduro, who actually has real control over the military and his state's police, which can execute practical murders with no substance.
Trump is theatrics over substance, oftentimes making his opposition stronger since he has a knack of getting people to take him extremely personally even though he's actually doing an honorary Oscar performance on how to make the public emotional for him, both from his supporters and his opponents.