After infuriating China over her trip to Taiwan, U.S. House Speaker Nancy Pelosi on Thursday met South Korean political leaders in Seoul but decided to avoid making direct public comments on relations with Beijing and Taipei that could further increase regional tensions.

Nancy Pelosi, the first House Speaker to visit Taiwan in 25 years, on Wednesday said that the American commitment to democracy in the self-governing island and elsewhere “remains ironclad.”

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On Thursday, China began military exercises, including missile strike training, in six zones surrounding Taiwan, in what could be the biggest of their kind since the mid-1990s.

After visiting Taiwan, Pelosi and other members of her congressional delegation flew to South Korea — a key US ally where about 28,500 American troops are deployed — on Wednesday evening, as part of an Asian tour that included earlier stops in Singapore and Malaysia.

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She met South Korean National Assembly Speaker Kim Jin Pyo and other senior members of Parliament on Thursday. After that hour-long meeting, Pelosi spoke about the bilateral alliance, forged in blood during the 1950-53 Korean War, and legislative efforts to boost ties, but didn’t directly mention her Taiwan visit or the Chinese protests.

“We also come to say to you that a friendship, (the) relationship that began from urgency and security, many years ago, has become the warmest of friendships,” Pelosi said in a joint news conference with Kim. “We want to advance security, economy and governance in an inter-parliamentary way.”

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Neither Pelosi nor Kim took questions from journalists.

Kim said he and Pelosi shared concerns about North Korea’s increasing nuclear threat. He said the two agreed to support their governments’ push for denuclearization and peace on the Korean Peninsula based on both strong deterrence against North Korea and diplomacy.

Pelosi and her delegation later spoke by phone with South Korean President Yoon Suk Yeol on the alliance, foreign policy and other issues. Yoon is on vacation this week, but critics accuse him of intentionally shunning a face-to-face meeting with Pelosi in consideration of ties with China, South Korea’s biggest trading partner. Yoon’s office said it had reviewed national interests and that Yoon’s vacation plan had already been set up when, about two weeks ago, Pelosi’s side contacted his office about a possible meeting.