Former Obama official: 'No substance' to Trump's diplomatic efforts in North Korea

A former Obama official criticized President TrumpDonald John TrumpUS-Saudi Arabia policy needs a dose of 'realpolitik' Trump talks to Swedish leader about rapper A$AP Rocky, offers to vouch for his bail Matt Gaetz ahead of Mueller hearing: 'We are going to reelect the president' MORE’s historic meeting with North Korean leader Kim Jong UnKim Jong Un Majority of voters aren't confident Trump's diplomacy will lead to North Korea denuclearization The Hill's Morning Report - Trump seizes House impeachment vote to rally GOP Trump blasts 2020 Dems during campaign rally MORE, saying it had “no substance.”

“Where is the progress other than the photo ops in North Korea?” asked Roger Fisk, who served on President Obama's 2013 inaugural committee.

“There’s no substance there,” he added. “Every other president ... had preconditions before they would even sit down with Kim Jong Un or his father or his father’s father.”

President Trump on Sunday became the first sitting U.S. president to step over the heavily guarded Demilitarized Zone (DMZ) into North Korea to meet with Kim for a surprise negotiation session, where the two leaders agreed to restart stalled nuclear talks.

But Fisk argued that when Trump stepped over the DMZ line, he “hemorrhaged massive amounts of American credibility.”

“Not having any real understanding about our history there and capping off a 100-hour global tour in which he was hostile to our allies,” he added in reference to G-20 meeting last weekend in Osaka, Japan. “He cosied up with every single thug or dictator in the world.”

Trump has received a mix of praise and criticism following his trip to Asia.

While many fellow Republicans including New Jersey Gov. Chris Christie (R) hailed the visit as a breakthrough in talks, some Democratic presidential candidates and human rights advocates panned the visit in light of the death of American college student Otto Warmbier, who was detained in North Korea before his death.

“Our President shouldn’t be squandering American influence on photo ops and exchanging love letters with a ruthless dictator,” Sen. Elizabeth WarrenElizabeth Ann WarrenJulián Castro is behind in the polls, but he's finding a niche Gabbard arrives in Puerto Rico to 'show support' amid street protests Democratic strategist predicts most 2020 candidates will drop out in late fall MORE (D-Mass.), tweeted following the meeting. “Instead, we should be dealing with North Korea through principled diplomacy that promotes US security, defends our allies, and upholds human rights.

Sens. Bernie SandersBernie SandersGabbard arrives in Puerto Rico to 'show support' amid street protests Democratic strategist predicts most 2020 candidates will drop out in late fall Sanders unveils plan to guarantee the 'right to a secure retirement' MORE (I-Vt.) and Amy KlobucharAmy Jean KlobucharDemocratic strategist predicts most 2020 candidates will drop out in late fall The Hill's 12:30 Report: Trump hits media over 'send her back' coverage Protect American patients and innovation from a harmful MedTech Tax increase MORE (D-Minn.) also criticized the meeting, along with former San Antonio Mayor Julián Castro.

—Tess Bonn