SEOUL: South Korea's main opposition party threatened on Monday (Dec 23) to impeach acting president Han Duck-soo if he failed to proclaim a law to launch a special counsel investigation into President Yoon Suk Yeol's failed bid to impose martial law. Prime Minister Han has taken over from the suspended Yoon, who was impeached on Dec 14 and faces a Constitutional Court review on whether to oust him. With a majority in parliament, the opposition Democratic Party passed a bill this month to