A deepening political crisis in South Korea has not diminished the military readiness of 28,500 troops stationed in the Asian state, a U.S. official said on Friday, but Washington is closely monitoring the situation.

South Korea’s opposition-controlled National Assembly has voted to impeach the country’s acting leader Han Duck-soo. The assembly approved the impeachment motion in a 192-0 vote. Han’s impeachment further deepens South Korea’s political crisis and damages its international image.

South Korea has voted to impeach its acting president Han Duck-soo, two weeks after parliament voted to impeach its President Yoon Suk Yeol. A total of 192 lawmakers voted for his impeachment, more than the 151 votes needed for it to succeed.