It was crude stuff. President Trump called on 55 Muslim leaders assembled in Riyadh to drive out terrorism from their countries. He identified Iran as a despotic state and came near to calling for regime change, though Iran held a presidential election generally regarded as fair only two days previously.
He denounced Hezbollah and lined up the US squarely on the side of the Sunni against the Shia in the sectarian proxy war that is tearing apart the Middle East.
The impact of US presidential visits and speeches abroad are generally over-rated and turn out to have far less influence than was claimed at the time.