With just one month until a scheduled sit-down with North Korea’s leader, President Donald Trump hasn’t set aside much time to prepare for meeting with Kim Jong Un, a stark contrast to the approach of past presidents.

“He doesn’t think he needs to,” said a senior administration official familiar with the President’s preparation. Aides plan to squeeze in time for Trump to learn more about Kim’s psychology and strategize on ways to respond to offers Kim may make in person, but so far a detailed plan hasn’t been laid out for getting Trump ready for the summit.

Even with North Korea threatening to scrap the meeting over long-planned U.S.-Korean military exercises, Trump’s aides in the White House and State Department are continuing to prepare briefing material in advance of the June 12 summit in Singapore. When asked Wednesday if he thinks Kim is bluffing, Trump responded, “We’ll see what happens.” He told reporters he still plans to insist on North Korea giving up its nuclear weapons.9