South Korea in close consultation with U.S. over military exercises

"Based on the strong South Korea-U.S. alliance, our government has been continuing coordination with the U.S. side on combined exercises and drills between South Korea and the U.S.," Wi told reporters, adding that the countries will "continue such coordination in the future."

The national security adviser also stated that Seoul is stepping up efforts to strengthen its own defense capabilities. Trump's instruction has sparked concerns that a scale-back in joint military exercises could hamper assessments of the South Korean military's operational capabilities, which are necessary for Seoul's plan to regain wartime OPCON.

At a Cabinet meeting earlier Tuesday, President Lee Jae Myung reaffirmed his commitment to regaining wartime OPCON during his term, which ends in 2030, as initially planned.

In a social media post, Trump mentioned asking Lee if Seoul would like to join efforts to denuclearize Iran, to which Lee reportedly responded, "No thanks."

Addressing Trump's remarks, Wi said Seoul has been actively participating in international discussions aimed at ensuring freedom of navigation in the Strait of Hormuz and global non-proliferation efforts. He added that the government is reviewing options for making practical contributions, considering the country's defense posture on the Korean Peninsula and relevant domestic legal procedures.

Wi stressed that South Korea has a "keener interest" than others in Iran's denuclearization, citing the country's experience with North Korea's nuclear ambition. He expressed hope that friendly relations between Trump and North Korean leader Kim Jong-un would lead to meaningful dialogue and the resumption of talks aimed at promoting peace and stability on the Korean Peninsula.