The Speaker of the House of Representatives of the United States (U.S.), Nancy Pelosi, expressed alarm about the escalating tensions on the Korean peninsula when she was in Asia.
Both of them were increasingly concerned about the way North Korean threats were growing.
In a joint statement with South Korean Parliament Speaker Kim Jin Pyo on Thursday, Pelosi expressed her concern regarding the standoff over North Korea's nuclear weapons programme.
Pelosi visited Taiwan the day before and arrived in South Korea that evening.
The discussions with Kim included, among other things, improving legislative collaboration.
Both expressed their support for the policies of their respective governments in Seoul and Washington towards North Korea at the same time.
A strong and extensive deterrence against North Korea served as the foundation for attempts to denuclearize North Korea and bring about peace through international collaboration and discussion.
The general people in both countries also had this impression.
The United States understood the entire extent of its military capabilities, including nuclear weapons, to defend South Korea through extended deterrence.
Along with previous weapons tests this year, North Korea has conducted several nuclear-capable missile launches, in violation of UN resolutions.
Washington is accused of having a hostile stance by Pyongyang.
One of the most dangerous areas of conflict in the world was the confrontation with North Korea, similar to the conflict over Taiwan.
The democratic island republic of Taiwan is considered to be part of China's territory, and Pelosi's visit there exacerbated existing tensions.
The heavily guarded border between South and North Korea is where Pelosi planned to travel on Thursday, according to the South Korean news agency Yonhap.