Washington (CNN) President Donald Trump is prizing his deal-making intuition over intensive preparations as he gears up for his summit with North Korean leader Kim Jong Un next week.

"It's about attitude," Trump said Thursday in the Oval Office sitting alongside Japanese Prime Minister Shinzo Abe, who flew to Washington aiming to help prepare Trump for the summit.

As the North Korean summit nears, the President's top advisers on North Korea have provided him with briefings on rogue nation's nuclear program and the US intelligence community's assessments of the North Korean leader Trump will face in Singapore next week. But they have also worried that Trump has not sufficiently internalized that information and is instead eager to head into the first meeting between a sitting US president and North Korean leader by relying on his intuition.

"I think I'm very well-prepared. I don't think I have to prepare very much. It's about attitude. It's about willingness to get things done," Trump said.

He added that he has "been preparing for this summit for a long time," though he didn't give specifics.

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