In meetings with government leaders, military officials and US service members, Pence said he wants to make sure the Pyeongchang Winter Olympics don't distract from the bellicose North Korean human rights abuses and nuclear program.
He is set to meet Wednesday with Japanese Prime Minister Shinzo Abe to discuss increasing pressure on the North.
Pence watched Japanese troops demonstrate the simulated deployment of Japan's surface-to-air missile defense system, which would attempt to intercept a North Korean missile. He also participated in a briefing at Japan's Ministry of Defense on the threat.
Pence will travel on to South Korea Thursday for meetings with President Moon Jae-in, where he will promote the Trump administration's campaign of "maximum pressure" against the North, as the South pursues a diplomatic opening around the Winter Olympics.
The vice president is leading the U.S. delegation to the opening ceremonies of the games, but said he is using the international sporting event as an opportunity to shine a spotlight on the North Korea.
"We'll be ensuring that whatever cooperation that's existing between North and South Korea today on Olympic teams does not cloud the reality of a regime that must continue to be isolated by the world community," Pence told reporters today.