Mike Pence has insisted "there is no daylight" among the United States and allies South Korea and Japan over their stance on Pyongyang.
The US Vice President spent the days leading up to the Pyeongchang Olympics warning that the North was trying to "hijack the message and imagery" of the event with its "propaganda." But the North was welcomed with open arms to what South Korean President Moon Jae-in called "Olympic games of peace."
It was the US that appeared to be the one left in the cold, especially after the sister of the North Korean dictator extended an invitation from her brother for Moon to visit the North. That was the clearest sign yet of an expanding diplomatic opening opposed by the Trump administration.
Pence said Moon updated him about the meeting he had with North Korean officials and "both of us reiterated to each other tonight that we will continue to stand strong and work in a coordinated way to bring maximum economic and diplomatic pressure to bear on North Korea."
Moon was all smiles as he greeted Kim Yo-jong, the sister of North Korean leader Kim Jong-un, and Kim Yong-nam, the country’s 90-year-old nominal head of state, for lunch at the presidential residence.
Kim Jong-uns family tree
Pence said on Friday that the US would oppose talks between the two Koreas until the North agreed to open negotiations on ending its nuclear programme.
On his flight to Alaska on Saturday, the vice president said he left Asia "encouraged that we will continue to work very closely to continue and intensify the maximum pressure campaign" against North Korea.
He said war had forged "the core of the bond" between the U.S. and South Korea and that helps explains "why there is no daylight and there will be no daylight" between the two.
At the opening ceremonies on Friday, Pence sat stone-faced in his seat as Moon and North Korean officials stood together with much of the stadium to applaud their joint team of athletes. White House officials stressed that Pence had applauded only for the American team, but Asia experts said the vice president’s refusal to stand could be seen as disrespectful to the hosts.
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US officials have been urging South Korea to be cautious in its rapprochement with the North. But North Korea’s record on human rights and the growing threat from its nuclear weapons programme appeared out of mind.
Even Japanese Prime Minister Shinzo Abe, who has shared the American scepticism of warming North-South relations and pressed Moon against falling for the North’s "smile diplomacy," greeted Kim Yong-nam.
At a Friday VIP reception for delegation leaders, Pence arrived late and stayed for just five minutes - and did not interact with the delegation from the North.
Kim Yo-jong visit
"The Koreans will think it’s a mood kill," said Frank Jannuzi, an expert on East Asia at the Mansfield Foundation in Washington. He criticised the Trump administration for straining too hard to signal disgust of Kim Jong Un’s government.
"The grievances that the world has about North Korea are very legitimate. But the Olympic moment that President Moon is trying to generate here is not a time to nurse those grievances," Jannuzi said. "It’s a time to focus on messages of reconciliation and peace."