Trump said in a radio interview with WMAL in Washington that "people have to be careful because at some point I fight back." The president added "I'm being very, very nice but at some point I fight back and it won't be pretty."
McCain, a former Navy pilot who spent 5 years in a Vietnam prisoner of war camp and is battling brain cancer, offered a simple response to Trump: "I have faced tougher adversaries."
In Philadelphia last night, the six-term Republican senator from Arizona received an award for a lifetime of service and sacrifice to the country.
In addition to recalling his more than two decades of military service and his imprisonment during the war, McCain took a moment to go a step further than the night's other speakers, who lamented what many described as a fractured political climate.
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