North and South Korea marched together behind a "unification" flag, leaving Moon to instinctively turn around and shake Kim's sister's hand.

Pence's office claimed afterward that the North had pulled out of a planned meeting at the last minute.

The North's state-run news agency ran a story Sunday quoting a "spokesman for the Korea Asia-Pacific Peace Committee" as saying that Pence insulted Kim's sister with his hard-line rhetoric after returning to the U.S. and "we will never have face-to-face talks with them even after 100 years or 200 years."

Fox News’ Greg Palkot, Constance McDonough, Katherine Lam and The Associated Press contributed to this report.of the British Health Service. / AFP PHOTO / Tolga AKMENTOLGA AKMEN/AFP/Getty Images TOLGA AKMEN AFP/Getty Images NHS at 70: demonstration and celebration march to mark anniversary Labour Party leader, Jeremy Corbyn, addresses demonstrators following the march AFP/Getty NHS at 70: demonstration and celebration march to mark anniversary A man stands with a coffin, used as a prop at a demonstration and celebration march to mark the 70th anniversary of the National Health Service (NHS), in central London on June 30, 2018. Organised by the Peoples Assembly, Health Campaigns Together, The TUC and 11 other health trade unions, tens of thousands are expected to attend the only national public event organised to mark the anniversary of the British Health Service. / AFP PHOTO / Tolga AKMENTOLGA AKMEN/AFP/Getty Images