President Donald Trump will meet for the second time with North Korean leader Kim Jong Un around the end of February, the White House said Friday, after a top general from Pyongyang paid a rare visit to Washington. Vice Chairman Kim Yong Chol, a right-hand man to the North Korean strongman, met the embattled president at the White House for an unusually long 90 minutes as the countries seek a denuclearization accord that could ease decades of hostility. White House spokeswoman Sarah Sanders said that Trump -- who has opined that he and Kim Jong Un fell "in love" after last year's landmark first summit -- would again meet the North Korean leader "near the end of February" at a location to be announced later. The flurry of diplomacy comes little more than a year after Trump was threatening to wipe North Korea off the map, with Pyongyang's nuclear and missile tests rattling nerves in East Asia. Sanders praised North Korea's efforts to reconcile but ruled out, for now, a key demand of Pyongyang -- a lifting of sanctions. "The United States is going to continue to keep pressure and sanctions on North Korea until we see fully and verified denuclearization," Sanders told reporters. "We've had very good steps in good faith from the North Koreans in releasing the hostages and other moves and so we'll continue those conversations," she said. She was referring to Pyongyang's quick deportation last year of an American. In 2017, a US student returned home comatose from North Korea and died within days after what a US judge said was torture. - Results or photo-op? - Kim Jong Un and Trump first met in June in Singapore, where they signed a vaguely worded document in which Kim pledged to work toward the "denuclearization of the Korean peninsula." But progress stalled soon afterward as Pyongyang and Washington -- which stations 28,500 troops in South Korea -- disagree over what that means. Critics say that the Singapore summit was little more than a photo-op. The second round with the young and elusive North Korean leader will again offer a change of headlines for Trump amid a barrage of scandalous allegations and a political deadlock that has shut down the US government. "Let's hope the second summit produces real results, but don't hold your breath as we wait for episode two of the Trump-Kim show," said Michael Fuchs, a senior fellow at the left-leaning Center for American Progress who worked closely with former secretary of state Hillary Clinton. Abe Denmark, director of the Asia program at the Woodrow Wilson International Center for Scholars, said the Singapore summit had thrown into question the security of US allies with little in return. "With another summit in the making, I hope for tangible progress and fear for a repeat: little movement from Kim, major concessions from Trump," he said. But Trump has pointed to the halt in missile launches by North Korea and recently said there would have been "a nice big fat war in Asia" if it were not for his efforts. Kim Yong Chol is the first North Korean dignitary in nearly two decades to spend a night in Washington, staying at a fashionable hotel a short drive from the White House. Secretary of State Mike Pompeo welcomed Kim at the hotel, posing briefly for pictures near a shelf with a framed portrait of civil rights icon Martin Luther King Jr., and later invited the delegation to lunch. The State Department said that Stephen Biegun, the US special representative on North Korea, would carry on discussions at a conference in Sweden starting on Saturday that will involve Pyongyang officials. - Vietnam ready to host - While no decision has been made on location, a Vietnamese government source told AFP that "logistical preparations" were under way to host the summit, most likely in the capital Hanoi or coastal city of Danang. Vietnam's cooperation with the United States has been growing for years as Hanoi -- much unlike Pyongyang -- sets aside memories of war. US-North Korea tensions began to abate a year ago with the encouragement of South Korea's dovish president, Moon Jae-in. Moon's office Saturday said the new summit could be a "turning point" in bringing peace to the Korean peninsula. UN Secretary-General Antonio Guterres told reporters that the second summit should set a clear roadmap on how to scrap North Korea's nuclear and ballistic missiles. The Singapore summit marked the first-ever meeting between sitting leaders of the United States and North Korea, which never formally ended the 1950-53 Korean War. The United States expects Pyongyang to give up its nuclear arsenal, doggedly built by the Kim dynasty despite sanctions and famines. Kim, whose family has ruled North Korea with an iron fist for three generations, is seeking guarantees of the regime's survival as well as relief from biting UN sanctions. North Korea sees the denuclearization goal more broadly, seeking an end to what it sees as US threats on the peninsula.