Just a day after abruptly pulling out of a planned summit with North Korea's leader, U.S. President Donald Trump held out hope Friday that the talks could still be held — possibly even on the scheduled June 12 date in Singapore.

"We are having very productive talks with North Korea about reinstating the Summit which, if it does happen, will likely remain in Singapore on the same date, June 12th., and, if necessary, will be extended beyond that date," Trump wrote in a tweet late Friday.

The head-spinning reversal started less than 24 hours after Trump withdrew Thursday from the summit in a letter addressed to North Korean leader Kim Jong Un — citing "tremendous anger and open hostility" from the nuclear-armed North.