Presidents Biden and Yoon pledged to deepen and broaden the scope of the U.S.-South Korea alliance, but their success could depend on how China, Japan, and North Korea respond.

President-Elect Yoon Suk-yeol has pledged to strengthen ties with the United States and take a more hard-line approach toward China and North Korea than his predecessor.

The vote for South Korea’s next president is taking place in a fractious political environment and is likely to bring a foreign policy neophyte to power.

Fearing an invasion of Ukraine, the U.S. government is vigorously trying to head off alleged Russian plots and misinformation campaigns. The efforts have opened a new front for competition between th…

Presidents Trump and Biden have turned to the Defense Production Act to procure critical medical supplies during the coronavirus pandemic. What does the law do?