Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Washington (CNN) Donald Trump is declining to endorse a pair of Republican heavyweights -- House Speaker Paul Ryan and former presidential nominee John McCain -- in their primary fights, another sign of the fractures within the party. Ryan and McCain face long-shot challengers in their respective primary races in Wisconsin and Arizona. Yet their party's presidential nominee would not bless them in an interview with The Washington Post on Tuesday. "I like Paul, but these are horrible times for our country. We need very strong leadership. We need very, very strong leadership. And I'm just not quite there yet. I'm not quite there yet," Trump said of Ryan.Ryan and McCain face long-shot challengers in their re-election racesTrump's phrasing -- "I'm not quite there yet" -- echoes comments Ryan made to CNN in May 
 Question:McCain in particular was harsh, saying _ did not have an "unfettered license to defame those who are the best among us."

Donald Trump