The Pentagon has prepared aggressive new actions against ISIS, according to CNN Pentagon correspondent Barbara Starr, as in this story. Trump had said he would demand an aggressive plan against ISIS within 30 days, and it has already been drawn up, but never approved by Obama.
Several combat brigades could be sent to northern Syria, to provide some combat, or combat support, or combat service support to existing forces, especially Kurds, who might actually try to take Raqqa on the ground. There don’t seem to be any plans to have US forced directly enter Raqqa or ISIS controlled cities.
Still, the escalation could inspire more terror operations in the US, especially attempts at Internet recruiting of loan wolves, which could put social media in a bind. In the Fort Lauderdale shooting case recently, the man arrested had been talking in :jihadi chatrooms, although he had also claimed he heard voices and was being manipulated as a Manchurian candidate.
There is controversy over whether Trump will continue to use Twitter. He told CNN he doesn’t like it but needs to reach millions himself. What if he changes his mind?
Trump has other controversial proposals, like discarding "One China", which could compromise getting China to throttle North Korea, and withdrawing from supporting NATO, especially if other countries don't pay their fair shares.