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.

The South Korean parliament voted Friday to impeach Acting President Han Duck-soo, just days after his predecessor Yoon Suk Yeol was impeached over declaring a short-lived martial law.The liberal opposition bloc led by the Democratic Party,

South Korea’s main opposition party has submitted a motion to impeach the country’s acting leader over his reluctance to fill three Constitutional Court vacancies ahead of the court’s review of rebellion charges against impeached President Yoon Suk Yeol stemming from his short-lived martial law decree on Dec.