SEOUL, March 24 (Reuters) - South Korea’s Constitutional Court reinstated Prime Minister Han Duck-soo to the post of acting president on Monday, striking down his impeachment as he pledged to focus on steering Asia’s fourth-biggest economy through a U.S. “trade war”.

The ruling, which comes amid months of political turmoil in the country, returns Han to power immediately. He took over as acting leader from President Yoon Suk Yeol, who was impeached over his imposition of martial law in December.