U.S. President Joe Biden offered condolences to President Yoon Suk Yeol, who arrived in Washington on Thursday after Yoon’s father, Yoon Ki-joong, died on Tuesday.

According to the presidential office, Biden and first lady Jill Biden conveyed their sympathies for Yoon’s loss in a card with a bouquet, expressing their hope Yoon’s father will rest in peace.

The funeral for Yoon Ki-joong, Yonsei University professor emeritus, was held on Thursday, two days after he died, just hours before Yoon Suk Yeol departed for the United States.

Yoon traveled to Washington to attend the first exclusive trilateral summit among Korea, the U.S. and Japan, scheduled to take place at Camp David on Friday.

During the summit, Yoon, along with host Biden and Japanese Prime Minister Fumio Kishida, is set to discuss strengthening cooperation among the three countries in response to escalating geopolitical threats, particularly North Korea.

Before departing for Washington, the presidential office announced that the three countries are expected to adopt at least two documents, the Camp David Principles and the Camp David Spirit.

The former will provide guidelines for trilateral cooperation, while the latter will outline their vision and implementation plans for the summit.

These documents will include concrete measures such as establishing a new consultative body and outlining cooperation on extended deterrence, joint military exercises and economic security.

On Thursday, a South Korean intelligence agency issued a warning about a potential intercontinental ballistic missile launch by North Korea in protest of the summit.

Yoon’s Air Force One landed at Joint Base Andrews at 6:55 p.m. on Thursday. He is scheduled to return to Korea on Friday and arrive around late Saturday night.

BY LEE HO-JEONG [lee.hojeong@joongang.co.kr]