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Real estate tycoon Donald Trump flashes the thumbs-up as he arrives on stage for the start of the prime time Republican presidential debate on August 6, 2015 at the Quicken Loans Arena in Cleveland, Ohio. AFP PHOTO/MANDEL NGAN        (Photo credit should read MANDEL NGAN/AFP/Getty Images)
Real estate tycoon Donald Trump flashes the thumbs-up as he arrives on stage for the start of the prime time Republican presidential debate on August 6, 2015 at the Quicken Loans Arena in Cleveland, Ohio. AFP PHOTO/MANDEL NGAN        (Photo credit should read MANDEL NGAN/AFP/Getty Images)

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Donald Trump: It's war on Clinton and Bush

Donald Trump says his campaign against political rivals is "war." CNN's Chris Frates reports.

Donald Trump: It's war on Clinton and Bush

Donald Trump says his campaign against political rivals is "war." CNN's Chris Frates reports.