President Trump said hours ahead of his historic meeting with North Korean leader Kim Jong Un that the U.S. will “know soon” whether or not a deal with Pyongyang on denuclearization is possible.

“Meetings between staffs and representatives are going well and quickly….but in the end, that doesn’t matter. We will all know soon whether or not a real deal, unlike those of the past, can happen!” Trump tweeted from Singapore just before 5:30 a.m. local time.