Trump: North Korea's 'Little Rocket Man' should have been handled long ago

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 StrangeLuther Johnson StrangeRoby wins Alabama GOP runoff, overcoming blowback from Trump criticism Once a Trump critic, Ala. rep faces runoff with his support Crowley surprise tops huge night for left 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 ClintonWilliam (Bill) Jefferson ClintonMontana governor raises profile ahead of potential 2020 bid Dem senator ties Kavanaugh confirmation vote to Trump-Putin controversy Don't place all your hopes — or fears — on a new Supreme Court justice MORE and Barack ObamaBarack Hussein ObamaMontana governor raises profile ahead of potential 2020 bid Trump was right to ditch UN’s plan for handling migrants Ex-White House stenographer: Trump is ‘lying to the American people’ 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.