Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE Saturday slammed Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE's policies while she served as secretary of state, blaming her for ISIS' rise in the Middle East.

"Crooked Hillary Clintons foreign interventions unleashed ISIS in Syria, Iraq and Libya. She is reckless and dangerous," Trump tweeted Saturday.

Crooked Hillary Clintons foreign interventions unleashed ISIS in Syria, Iraq and Libya. She is reckless and dangerous! — Donald J. Trump (@realDonaldTrump) May 21, 2016

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Trump has unleashed a salvo of attacks on Clinton after becoming the Republican party's presumptive nominee, mostly focusing on her "bad judgement" as secretary of State and her husband's marital affairs.

Clinton fired back earlier this week, calling Trump "not qualified" to be president.

"I know how hard this job is, and I know that we need steadiness as well as strength and smarts in it, and I have concluded he is not qualified to be president of the United States," Clinton said to CNN's Chris Cuomo.