SINGAPORE - Hours ahead of a historic meeting between President Donald Trump and Kim Jong Un, the North Korean leader, News 12's Kristie Reeter spoke with Pamela Chasek, the head of Manhattan College's political science department, for a breakdown of what could happen.

"This is the first time that a sitting American president is meeting with a president from North Korea," Chasek said. "Regardless what the outcome is, President Trump is setting a new precedent."

And the nature of the meeting also made it hard to predict an outcome, according to the professor.

"The president has not really given us much of a clue -- on one minute, he's saying that he'll know very quickly if the president of North Korea is worth talking to," she said. "The next moment he's saying this may be a multiday meeting. One moment, we're hearing that if he doesn't agree to denuclearization that will end it. And other times we hear that this will be a slow process that will take many meetings."

The two leaders also did not publicly release an agenda for the meeting outlining what else they planned to discuss.

Chasek also said that Trump has a habit of alienating American allies and reaching out to adversaries. 

"One could argue that in the past, traditional diplomacy has not been effective," she said. "So perhaps upending it like this could result in something different."