The presidential office will detail the outcome of South Korea-U.S. negotiations on tariffs and security sometime this week.

Presidential chief of staff Kang Hoon-sik told a press briefing Monday that a joint fact sheet outlining the results is on the way.

Kang said the top office is not satisfied with the final agreement, which sets the U.S.-bound cash investment at $200 billion with an annual cap of $20 billion.

Kang said that, though relevant working-level officials are satisfied with the outcome of the talks and believe the negotiations were a success, the president did not give a positive response and that the top office still has regrets.

The spokesperson added that Washington's approval of Seoul's request to obtain nuclear-powered submarine fuel was the result of efforts to persuade both China and the United States that South Korea needed to prepare a response to North Korea's announcement of a similar vessel.

Earlier in March, the North announced it was developing its own nuclear-powered submarine.