Rep. Adam Kinzinger Adam Daniel KinzingerFox News reporter defends confirming Atlantic piece despite Trump backlash: 'I feel very confident' GOP lawmaker defends Fox reporter after Trump calls for her firing Lindsey Graham: 'QAnon is bats--- crazy' MORE (R-Ill.) suggested on Wednesday that North Korea's threat to back out of a highly anticipated meeting with President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE was probably "a little bluster" to show that its leader Kim Jong Un is "still in control."

But Kinzinger also said that the threat, made late Tuesday night, was reminiscent of the unpredictable and erratic behavior that the rogue nation has long been known for on the world stage.

"I think they’re probably doing a little bluster right now, trying to show his domestic population that he’s still in control," Kinzinger said on CNN's "New Day."

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"It’s concerning to this perspective: this is the old pattern of North Korea, where they, on the one hand, come out smiling with some unicorns that they give to South Korea," he continued. "And then the next day, it’s like OK, we’re going to fight back."

Rep. Adam Kinzinger says North Korea is likely "doing a little bluster right now," but their threat to walk away from the summit is concerning because "it just shows that North Korea is back to their old pattern of kind of give and take" https://t.co/nboxMIVfnd pic.twitter.com/jFBuLQZrIs — New Day (@NewDay) May 16, 2018

Kinzinger's comments came hours after Pyongyang warned that it could pull out of a planned June 12 meeting between Trump and Kim if the U.S. demanded "unilateral nuclear abandonment."

That threat followed a decision by North Korea to end talks with South Korea because of joint military drills conducted by the U.S. and the South, which the North called "provocative military ruckus."

North Korea's rhetoric took a decidedly harder line than it has in recent months. Since January, tensions on the Korean Peninsula have waned amid a series of diplomatic overtures and gestures that ultimately culminated in plans for a meeting between Trump and Kim.

Last month, North Korea announced that it would cease its nuclear and ballistic missile tests ahead of the planned summit with the U.S. and dismantle a nuclear test site. Just last week, Pyongyang also released three U.S. prisoners during a brief visit by Secretary of State Mike Pompeo Michael (Mike) Richard PompeoOvernight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers Overnight Defense: House Democrats unveil stopgap spending measure to GOP opposition | Bill includes .6B for new subs | Trump issues Iran sanctions after world shrugs at US action at UN Navalny calls on Russia to return clothes he was wearing when he fell ill MORE.

Despite North Korea's rhetoric on Tuesday, the State Department said that it would continue to plan the meeting between Trump and Kim, which is expected to be the first such encounter between a sitting U.S. president and a North Korean leader.