South Korea’s chief presidential policy adviser has resigned, the presidential Blue House said on Tuesday, after President Lee Jae Myung reshuffled his cabinet and senior aides amid a drop in his approval rating.Kim Yong-beom was a key adviser to Lee on economic policy, including on housing and stock market issues.Kim had offered to step down from the post on Monday, which oversees the administration’s economic and domestic policy agenda.During his term, Kim had drawn criticism over the...