South Korea’s vice foreign minister briefed his U.S. counterpart on Seoul’s new unification doctrine to “extend freedom” to North Korea on Tuesday, seeking support for a policy that experts say endorses unification by absorption.

Kim Hong-kyun met with U.S. Deputy Secretary of State Kurt Campbell in Washington and outlined key elements of the Yoon administration’s “August 15 Unification Doctrine,” according to Seoul’s foreign ministry.

Campbell reportedly reaffirmed U.S. support for the policy and Washington’s commitment to “serious and sustained diplomacy” with North Korea.

South Korean President Yoon Suk-yeol announced the new doctrine seeking “freedom-based unification” under ROK rule in