President Trump ripped past U.S. administrations' handling of North Korea on Friday, escalating his verbal feud with the country's leader Kim Jong Un by continuing to call him "Rocket Man" and "Little Rocket Man."

"Rocket man should have been handled a long time ago," Trump told a crowd of supporters in Alabama at a rally for Sen. Luther Strange Luther Johnson StrangeDomestic influence campaigns borrow from Russia’s playbook Overnight Defense: Senate bucks Trump with Yemen war vote, resolution calling crown prince 'responsible' for Khashoggi killing | House briefing on Saudi Arabia fails to move needle | Inhofe casts doubt on Space Force Five things to watch in Mississippi Senate race MORE (R-Ala.). He has started using the name "Rocket man" for North Korea's leader in the past week.

"We can't have mad men out there shooting rockets all over the place," Trump said.

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"He should have been handled a long time ago by Clinton. I won't mentioned the Republicans, by Obama," he continued, referring to past presidents Bill Clinton William (Bill) Jefferson ClintonKasich fundraises off 2020 speculation Inviting Kim Jong Un to Washington Howard Schultz must run as a Democrat for chance in 2020 MORE and Barack Obama Barack Hussein ObamaChicago's next mayor will be a black woman Obama portraits brought more than 1 million visitors to National Portrait Gallery in first year With low birth rate, America needs future migrants MORE.

"This shouldn't be handled now. But I'm going to handle it because we have to handle it. Little rocket man. We're going to do it. Because we really have no choice choice. We really have no choice," he said.

Trump's comments come after Kim blasted Trump on Thursday, calling him a "dotard" and threatening to escalate North Korea's nuclear weapons program despite the U.S. imposing increased sanctions on the country.

North Korea's Foreign Minister Ri Yong Ho then threatened to test a hydrogen bomb in the Pacific Ocean.

The president responded to the threats on Friday, saying Pyongyang would be tested like never before.