Secretary of State Mike Pompeo, the former Central Intelligence Agency chief who has traveled to North Korea and met with Kim Jong Un twice in the past two months, said he believed the country's leaders are "contemplating a path forward where they can make a strategic shift, one that their country has not been prepared to make before".
The White House sent out a release later Friday that said Trump, who had just left for his retreat at Camp David, Md., had read the letter.
It said Mr Assad made the comments on Wednesday while receiving diplomatic credential documents from North Korean ambassador Mun Jong Nam.
Trump indicated that the campaign of "maximum pressure" was at least on hold, vowing no new sanctions while talks are ongoing.
Summit planners must not lose sight of North Korea's deplorable human rights record.
Pompeo also was scheduled to meet with Trump to brief him on the state of the talks.
"We talked about nearly everything".
"This is going to be a process that will take days and weeks to work our way through", Pompeo said.
North Korea's flurry of diplomatic activity following a torrid run in nuclear weapons and missile tests in 2017 suggests that Kim is eager for sanctions relief to build his economy and the worldwide legitimacy the summit with Trump would provide.
The president said he believes North Korea is committed to denuclearization and even suggested the summit could bring an official end to the Korean War.
Brazil's Neymar to return from injury against Croatia
The defeat was Croatia's second in their last three friendly games (won one) ahead of the FIFA World Cup. Brazil will undoubtedly be careful with the 26-year-old, who is arguably their most important player.
Asked about Pyongyang's commitment to denuclearization, Trump said: "I think they want to do that".
But on Friday, after meeting with North Korea's Kim Yong-chol, he announced the Sinapore-based talks were back on.
He adds, "We have seen history repeat, where North Korea would declare to denuclearize, thereby portraying itself as conciliatory and forthcoming, only to turn around to void all global efforts towards peace".
"Between now and if we're going to have a summit, they're going to have to make clear what they're willing to do."Meanwhile, Russia's foreign minister arrived in Pyongyang on Thursday for talks with Kim Jong Un and warned against setting expectations too high, urging all sides to "avoid the temptation to demand everything and now". It went very well", the president told reporters following the letter-delivery". "Hopefully we will have a meeting on the (June) 12th", Trump said, adding there may be multiple meetings but "maybe we'll have none".
Trump did commit to not imposing any additional sanctions while talks are underway, and he said he'd like to see a day when he can lift them entirely.
Kim Yong Chol delivered a letter from the North Korean leader to Trump. But a meeting never came to be - and no sitting president has met with a North Korean leader since.
"The potential summit between @POTUS and Chairman Kim presents #DPRK with a great opportunity to achieve security and economic prosperity", Pompeo tweeted shortly before Thursday's meeting began.
On Wednesday, Pompeo tweeted: "Good working dinner with Kim Yong Chol in NY tonight".
The United States and South Korea blacklisted the official for supporting North Korea's nuclear and missile programs in 2010 and 2016, respectively.