Trump Won't Support Ryan or McCain, Clinton Out-raising Trump, Zika Outbreak in Florida

President Barack Obama offered one of his sharpest denunciations of Donald Trump to date Tuesday, declaring the Republican nominee entirely unfit to serve as president and lambasting Republicans for sticking by their nominee. The strong rebuke in the White House East Room came after Trump's criticism of the family of a slain Muslim US soldier, along with comments that displayed apparent confusion related to the Russian incursion into Ukraine. "The Republican nominee is unfit to serve as president," Obama said at a White House news conference with the Prime Minister of Singapore. "He keeps on proving it." The Trump campaign responded by going after the Democratic nominee as well as the President. "Hillary Clinton has proven herself unfit to serve in any government office," a Trump statement said, listing a number of policy concerns. "Obama-Clinton have single-handedly destabilized the Middle East, handed Iraq, Libya and Syria to ISIS, and allowed our personnel to be slaughtered at Benghazi." Obama on Tuesday described his feelings about Trump as unprecedented, recalling disagreements with previous GOP presidential nominees Sen. John McCain and Mitt Romney -- but never an outright sense they were unfit to serve. "The notion that he would attack a Gold Star family that made such extraordinary sacrifices on behalf of our country, the fact that he doesn't appear to have basic knowledge of critical issues in Europe, the Middle East, in Asia, means that he's woefully unprepared to do this job," Obama said. Speaking alongside Singapore Prime Minister Lee Hsien Loong in the White House East Room, Obama said there are now weekly episodes in which even Republican party leaders distance themselves from Trump. "There has to be a point at which you say, 'Enough,' " Obama said.