Clinton rails against Trump's 'reckless, risky talk'

Democratic presidential front-runner Hillary ClintonHillary Rodham ClintonPowell: Clinton 'trying to pin' her email use on my advice Report: Some fear ‘risk’ of Trump camp relying on RNC Jewelry store owners donate to Clinton after Ivanka Trump order MORE took aim at presumptive GOP nominee Donald TrumpDonald TrumpReport: Trump discussed continuing ‘Apprentice’ from White House Report: Hannity informally advising Trump Report: Some fear ‘risk’ of Trump camp relying on RNC MORE while campaigning in Kentucky on Sunday, reviving her characterization of him as a "loose cannon." 

"I’ve never heard such reckless, risky talk from somebody about to be a nominee for president than I’ve heard from Donald Trump when it comes to nuclear weapons. For 70 years Democrats and Republicans alike, we’ve done everything we could to prevent more countries from having nuclear weapons," Clinton said at an event in Lousville. "And along comes Donald Trump and says, well, he doesn’t really care, let them all have nuclear weapons. He says he would use nuclear weapons."

Trump has come under fire for suggesting that he would allow Japan and South Korea to have nuclear weapons. 

"This is scary, dangerous talk. This is the talk of a loose cannon who is making statements and creating confusion. We can’t afford that. We need to keep the country on the right track, and we have to keep the world as stable as possible," Clinton said.

She also criticized his stance on the minimum wage and said she would "crack down" on businesses that keep their employees' wages flat while paying large dividends to shareholders and bonuses to executives.

"Honesty, the things he said about the economy are just frightening," Clinton said. 

Kentucky holds its Democratic primary on Tuesday. Trump won the state's Republican primary in March, with about 36 percent of the vote.