Some observers in South Korea interpreted the move as undue political pressure from Tokyo intended to sideline a local champion. On Monday, Cho Kuk, a disgraced former justice minister but rising opposition politician, called Yoon's approach to Japan "humiliating," accusing the president of failing to fulfill his duty to defend a major South Korean company. Since last year when initiating his policy of seeking closer ties with Japan, Yoon has faced criticism from civic groups and opposition parties, both of which tend to be critical of Japan, for not insisting that the country make new shows of contrition for its 1910-1945 colonial occupation of the Korean Peninsula. The opposition has also increased heat on him over other hot-button issues, including recent visits by lawmakers to a set of islands in the Sea of Japan controlled by South Korea but claimed by Japan.