President Donald Trump declared the Kim Jong Un summit a success on Tuesday that will lead to the denuclearization of North Korea, even as critics pointed out that their agreement lacks specifics and that Trump offered to curtail military support for South Korea.

“Today is the beginning of an arduous process — our eyes are wide open,” Trump said at a news conference after the unprecedented meeting with the North Korea dictator.

Trump said he would not withdraw U.S. troops from South Korea as part of the agreement, though he would like to “get our soldiers home” at some point. Trump also said the U.S. would stop “war games” military exercises with South Korea, saying they are too expensive and “provocative.”

While there will be “vigorous negotiations” on denuclearization, Trump said, he believes Kim is “very talented” and will follow through on his pledge to disarm in exchange for economic assistance. At another point, however, Trump said “I may be wrong” about his new negotiating partner.

“We’ll probably need another summit,” Trump said in his news conference, which lasted more than an hour.

Trump spoke as numerous foreign policy analysts pointed out that Trump-Kim agreement cites only intentions to denuclearize, with no details about how to get that done. The agreement says nothing about verification or inspection systems to make sure North Korea actually gets rid of weapons.

“The summit was heavy on pomp and circumstance and low on details,” said Olivia Enos, policy analyst with the Asian Studies Center at The Heritage Foundation in Washington.

The pledge on denuclearization did not include the U.S. demands for a “complete, verifiable, irreversible dismantlement” of North Korea’s nuclear weapons programs, she pointed out.

“The promise of future dialogue means it’s possible to hammer out those details going forward, but commitments were limited, general and unspecific,” said Enos, who was in Singapore for the summit.

The general agreement also did not provide specifics about what Kim means by “denuclearization.” In the past, North Korea has said it requires the U.S. to pull back its own nuclear weapons systems in the region as well as withdraw American troops from South Korea.USAToday