“He’ll probably go down as the worst president in the history of our country," Trump said of Obama. | AP Photo Trump: Obama’s ‘concerned I’m gonna win’

President Barack Obama attacked Donald Trump because “he’s concerned” Trump will succeed him, the Republican presidential nominee said Tuesday.

Even as Obama stood beside Singapore Prime Minister Lee Hsien Loong for a bilateral news conference at the White House, he unleashed on Trump and Republicans who continue to support him despite his controversial rhetoric. He called the real estate mogul “unfit” for the Oval Office and “woefully unprepared” for the presidency, while also challenging Republicans to un-endorse their standard-bearer.


“I think it just means he’s concerned I’m gonna win,” Trump told WJLA in response to Obama’s remarks.

Obama has insisted that Trump will not be president but acknowledged last week that “anything is possible.”

“Don’t forget last time he said I would never get the nomination,” Trump added. “He said the other day maybe I can win the election. No, I guess he probably has to say that kind of thing.”

Trump also followed up on a tweet slamming Obama, who he said “will go down as perhaps the worst president in the history of the United States!”

“Well, he’s a terrible president,” Trump told WJLA. “He’ll probably go down as the worst president in the history of our country. He’s been a total disaster.”