Trump calls Clinton 'unhinged' and a 'monster'
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Donald TrumpDonald John TrumpGOP lawmakers preparing to vote on bill allowing migrant children to be detained longer than 20 days: report Wasserman Schultz: Infants separated from their parents are in Florida immigrant shelters Ex-White House ethics chief: Sarah Sanders tweet violates ethics laws MORE on Friday escalated his personal attacks on Hillary ClintonHillary Diane Rodham ClintonColorado governor teases possible presidential run Mueller asks judge for September sentencing for Papadopoulos House Judiciary Committee subpoenas FBI agent who sent anti-Trump texts MORE, calling her a "monster" and "unstable" at a series of Friday campaign events. 

"Unstable Hillary Clinton, lacks the judgment, temperament and moral character to lead this country — and I believe that so strongly," Trump said at a rally in Des Moines, Iowa, according to CNN. 

"She's really pretty close to unhinged, and you've seen, you've seen it a couple times. The people in the background know it, the people who know her know it, and she's like an unbalanced person."

The GOP presidential nominee called his rival a dangerous pathological liar and warned voters Clinton would lead to "the destruction of this country from within."

"The legacy of Hillary Clinton: death, destruction, chaos and weakness," Trump said. "She's weak. She's a weak person. I know her. She's a weak person."

He upped his rhetoric even further at another Friday campaign event in Green Bay, Wis. 

"In one way, she's a monster," Trump said. "In another way, she's a weak person. She's actually not strong enough to be president."