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 parliament voted to impeach Prime Minister and acting President Han Duck-soo, less than two weeks after parliament stripped President Yoon Suk Yeol of his powers over his short-lived martial law order that plunged the country into political disarray.