These reputable and superbly knowledgable Republicans policy wonks are expressing an extreme concern about a GOP candidate for President of the United States, the unquestioned most powerful position in the world, despite Trump's claims of current national weakness. I predict more Republicans to follow. Trump for them does not represent their Party's traditional values. Others will hide. Clinton's campaign has been competent but far less than brilliant, but Trump's is disastrous. Hard to see how he can recover, but many more Trump accused scandals, reputation attacks and personal insults are sure to follow. Unfortunately but earned for him, his reputation and political stock is declining fast with more information available and increasing Republican defections. When established Party loyalists can't support someone, something is seriously wrong. Clearly the Republican elite are scared, and they should be.