Kim's new weapon to exploit Trump-Moon N Korea divide: His 'smiling' sister

The question now is whether the US and South Korea can stay united in keeping up the pressure on North Korea just as sanctions limiting export revenue and curbing fuel imports start to bite

North Korean leader Kim Jong Un deployed a new weapon at the Olympics to fight back against the Trump administration’s sanctions and threats of a preemptive strike against his nuclear program: His sister.

Kim Yo Jong shook hands with South Korean President Moon Jae-in, cheered enthusiastically for a unified Korean team, and displayed a sense of humor in weekend meetings. She also delivered a letter inviting Moon to a summit with her brother in Pyongyang, and asked him to play a “leading role” in reuniting the two Koreas after nearly seven decades.

The gesture sought to further exploit divisions between the US