That's in stark contrast to just a few months ago, when the president dismissively referred to Kim as "Little Rocket Man", and warned North Korea that it "will be met with fire and the fury like the world has never seen" if it provoked the United States with its nuclear program.
But Trump told Hannity he thought his tough style paved the way for Tuesday's summit.
Pentagon officials were surprised Tuesday after President Donald Trump vowed at the summit with North Korea's leader Kim Jong-un to cancel "provocative" joint military drills with South Korea. They will. I think they will, I really believe that he will.
The meeting in Singapore produced a handful of commitments from the Kim regime, including a restated intent to denuclearize the Korean peninsula.
But as President Trump receives heapings of praise and skepticism, Vice President Mike Pence and a GOP lawmaker are sending conflicting messages over whether the United States will officially end military drills off the Korean peninsula.
"USFK has received no updated guidance on execution or cessation of training exercises - to include this fall's schedule Ulchi Freedom Guardian", US Forces in Korea lieutenant-colonel Jennifer Lovett said in a statement.
Watch the weird Hollywood-style video Trump made for Kim Jong
Interested in North Korea? "So Trump is challenging Kim Jong Un to shake his hand and go into the light", Travers said. Add North Korea as an interest to stay up to date on the latest North Korea news, video, and analysis from ABC News.
The joint declaration stated that the US has committed to providing "security guarantees" to Pyongyang.
During a news conference following his summit with North Korean leader Kim Jong Un, Trump pushed his unconventional approach even further by calling annual U.S.
"At this current point, there is a need to discern the exact meaning and intent of President Trump's comments", Seoul's Defence Ministry said, adding that there have been no discussions yet with Washington on modifying drills set for August. "He didn't fight it".
The U.S. had rejected such proposals in the past, but North Korea has declared an end to testing its nuclear weapons and ballistic missiles, and now Trump appears ready to end exercises while talks are ongoing.
"I want to bring our soldiers back home", he said. "So I think it's probably well for everybody to maintain a healthy skepticism until we see those actions taken".
The ROK President said Seoul will support Pyongyang along the path to peace, vowing to "spare no effort in cooperating" with concerned parties "to ensure that the agreement can be implemented in its entirety".