Vastavam web: South Korean President Moon Jae-in today replaced his defence chief and four other ministers in a cabinet reshuffle after falling approval ratings in recent weeks. Moon has driven a rapid diplomatic rapprochement with nuclear-armed North Korea, but defence minister Song Young-moo came under fire for mishandling a controversy over a defence intelligence unit. In March, documents emerged detailing military plans to impose martial law against protesters demanding the ouster of Moon’s predecessor Park Geun-hye last year, but Song failed to report them to the presidential Blue House. It is normal for South Korean defence ministers to be former top military officers — Song was previously an admiral. Moon’s popularity rating soared to 83 percent after his Panmunjom summit with the North’s leader Kim Jong Un in April.