The problem with Donald Trump fulfilling that prophesy is that he doesn't understand ambiguous things...he also doesn't understand obvious things.
A problem with trying to interpret bible prophesy is that no matter the era, whoever is living during that time really REALLY wants the prophesy to apply to their own time. Because they're that important and God has chosen them and their time. Russell did backflips to try to fit it in to his own time, he used inaccurate history plus the steps inside the Great Pyramid. Fred found his own formula to fit his own time (absurd counting of millennia since creation of Adam). Harold Camping found his own, using the measurements of the Ark.