Trump’s honesty is only now counting for the world because he leads its most powerful country.
However, it is no coincidence that American society has generated such a leader: cultures in which freedom makes goodness legally optional, and therefore genuine when it occurs, make that same goodness stronger; and goodness is naturally constructive and marketable, which means that such cultures will inevitably be the strongest.
Following the path of God releases divine power: and, on a national scale, America has done this more than any other country.